diff --git a/admin/settings.php b/admin/settings.php
index eed4b5e..7b957ae 100644
--- a/admin/settings.php
+++ b/admin/settings.php
@@ -6,14 +6,22 @@ require_admin();
 $db = db();
 
 $rate = 0.23; // Default
+$bank_name = '';
+$bank_account_number = '';
 $message = '';
 
-// Fetch current rate
-$stmt = $db->prepare("SELECT value FROM settings WHERE `key` = 'pln_to_eur_rate'");
-$stmt->execute();
-$result = $stmt->fetch(PDO::FETCH_ASSOC);
-if ($result) {
-    $rate = (float)$result['value'];
+// Fetch current settings
+$stmt = $db->query("SELECT `key`, `value` FROM settings");
+$settings = $stmt->fetchAll(PDO::FETCH_KEY_PAIR);
+
+if (isset($settings['pln_to_eur_rate'])) {
+    $rate = (float)$settings['pln_to_eur_rate'];
+}
+if (isset($settings['bank_name'])) {
+    $bank_name = $settings['bank_name'];
+}
+if (isset($settings['bank_account_number'])) {
+    $bank_account_number = $settings['bank_account_number'];
 }
 
 // Handle form submission
@@ -30,10 +38,23 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         } else {
             $message = 'Wprowadź poprawną wartość kursu (liczba większa od 0).';
         }
+    } elseif (isset($_POST['bank_name']) || isset($_POST['bank_account_number'])) {
+        $new_bank_name = filter_input(INPUT_POST, 'bank_name', FILTER_SANITIZE_STRING);
+        $new_bank_account_number = filter_input(INPUT_POST, 'bank_account_number', FILTER_SANITIZE_STRING);
+
+        $stmt = $db->prepare("INSERT INTO settings (`key`, value) VALUES (:key, :value) ON DUPLICATE KEY UPDATE value = :value");
+        
+        $stmt->execute([':key' => 'bank_name', ':value' => $new_bank_name]);
+        $bank_name = $new_bank_name;
+        
+        $stmt->execute([':key' => 'bank_account_number', ':value' => $new_bank_account_number]);
+        $bank_account_number = $new_bank_account_number;
+
+        $message = 'Dane do przelewu zostały zaktualizowane.';
     }
 }
 
-$page_title = 'Ustawienia Walut';
+$page_title = 'Ustawienia';
 
 ?>
 
@@ -48,7 +69,7 @@ $page_title = 'Ustawienia Walut';
         <h1 class="h2"><?= $page_title ?></h1>
     </div>
 
-    <div class="card">
+    <div class="card mb-4">
         <div class="card-body">
             <h5 class="card-title">Kurs Wymiany Walut</h5>
             <p class="card-text">Ustaw kurs wymiany PLN na EUR. Ten kurs będzie używany do wyświetlania cen w EUR dla klientów używających angielskiej wersji strony.</p>
@@ -68,6 +89,25 @@ $page_title = 'Ustawienia Walut';
             </form>
         </div>
     </div>
+
+    <div class="card">
+        <div class="card-body">
+            <h5 class="card-title">Dane do przelewu</h5>
+            <p class="card-text">Ustaw dane do przelewu, które będą wyświetlane w mailach i na stronie po złożeniu zamówienia.</p>
+
+            <form method="POST" action="settings.php">
+                <div class="mb-3">
+                    <label for="bank_name" class="form-label">Nazwa banku</label>
+                    <input type="text" class="form-control" id="bank_name" name="bank_name" value="<?= htmlspecialchars($bank_name) ?>">
+                </div>
+                <div class="mb-3">
+                    <label for="bank_account_number" class="form-label">Numer konta bankowego</label>
+                    <input type="text" class="form-control" id="bank_account_number" name="bank_account_number" value="<?= htmlspecialchars($bank_account_number) ?>">
+                </div>
+                <button type="submit" class="btn btn-primary">Zapisz</button>
+            </form>
+        </div>
+    </div>
 </main>
 
 <?php require_once __DIR__ . '/../includes/footer.php'; ?>
diff --git a/debug_password_change.log b/debug_password_change.log
new file mode 100644
index 0000000..0220cc2
--- /dev/null
+++ b/debug_password_change.log
@@ -0,0 +1,5 @@
+Request method: GET
+Array
+(
+)
+
diff --git a/debug_price.log b/debug_price.log
index 1f3d444..9b1b8de 100644
--- a/debug_price.log
+++ b/debug_price.log
@@ -11543,3 +11543,559 @@ Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84
 Found product price. Net: 233.2, Gross: 286.84
 FINAL: Returning Net: 233.2, Gross: 286.84
 ---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 1, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1111.00","price_gross":"1366.53"}
+Found product price. Net: 1111, Gross: 1366.53
+FINAL: Returning Net: 1111, Gross: 1366.53
+---
+---
+START getEffectivePrice for product 2, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1318.05","price_gross":"1621.20"}
+Found product price. Net: 1318.05, Gross: 1621.2
+FINAL: Returning Net: 1318.05, Gross: 1621.2
+---
+---
+START getEffectivePrice for product 3, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 4, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1111.00","price_gross":"1366.53"}
+Found product price. Net: 1111, Gross: 1366.53
+FINAL: Returning Net: 1111, Gross: 1366.53
+---
+---
+START getEffectivePrice for product 2, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1318.05","price_gross":"1621.20"}
+Found product price. Net: 1318.05, Gross: 1621.2
+FINAL: Returning Net: 1318.05, Gross: 1621.2
+---
+---
+START getEffectivePrice for product 3, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 4, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1111.00","price_gross":"1366.53"}
+Found product price. Net: 1111, Gross: 1366.53
+FINAL: Returning Net: 1111, Gross: 1366.53
+---
+---
+START getEffectivePrice for product 2, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1318.05","price_gross":"1621.20"}
+Found product price. Net: 1318.05, Gross: 1621.2
+FINAL: Returning Net: 1318.05, Gross: 1621.2
+---
+---
+START getEffectivePrice for product 3, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 4, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1111.00","price_gross":"1366.53"}
+Found product price. Net: 1111, Gross: 1366.53
+FINAL: Returning Net: 1111, Gross: 1366.53
+---
+---
+START getEffectivePrice for product 2, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1318.05","price_gross":"1621.20"}
+Found product price. Net: 1318.05, Gross: 1621.2
+FINAL: Returning Net: 1318.05, Gross: 1621.2
+---
+---
+START getEffectivePrice for product 3, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 4, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1111.00","price_gross":"1366.53"}
+Found product price. Net: 1111, Gross: 1366.53
+FINAL: Returning Net: 1111, Gross: 1366.53
+---
+---
+START getEffectivePrice for product 2, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1318.05","price_gross":"1621.20"}
+Found product price. Net: 1318.05, Gross: 1621.2
+FINAL: Returning Net: 1318.05, Gross: 1621.2
+---
+---
+START getEffectivePrice for product 3, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 4, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 1
+Client price query executed. Found: {"price_net":"837.40","price_gross":"1030.00"}
+Found client price. Net: 837.4, Gross: 1030
+FINAL: Returning Net: 837.4, Gross: 1030
+---
+---
+START getEffectivePrice for product 2, client 1
+Client price query executed. Found: {"price_net":"1056.91","price_gross":"1300.00"}
+Found client price. Net: 1056.91, Gross: 1300
+FINAL: Returning Net: 1056.91, Gross: 1300
+---
+---
+START getEffectivePrice for product 3, client 1
+Client price query executed. Found: {"price_net":"32.52","price_gross":"40.00"}
+Found client price. Net: 32.52, Gross: 40
+FINAL: Returning Net: 32.52, Gross: 40
+---
+---
+START getEffectivePrice for product 4, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 1
+Client price query executed. Found: No
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
+---
+START getEffectivePrice for product 1, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1111.00","price_gross":"1366.53"}
+Found product price. Net: 1111, Gross: 1366.53
+FINAL: Returning Net: 1111, Gross: 1366.53
+---
+---
+START getEffectivePrice for product 2, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"1318.05","price_gross":"1621.20"}
+Found product price. Net: 1318.05, Gross: 1621.2
+FINAL: Returning Net: 1318.05, Gross: 1621.2
+---
+---
+START getEffectivePrice for product 3, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 4, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"9.95","price_gross":"12.24"}
+Found product price. Net: 9.95, Gross: 12.24
+FINAL: Returning Net: 9.95, Gross: 12.24
+---
+---
+START getEffectivePrice for product 5, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"68.00","price_gross":"83.64"}
+Found product price. Net: 68, Gross: 83.64
+FINAL: Returning Net: 68, Gross: 83.64
+---
+---
+START getEffectivePrice for product 6, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"171.60","price_gross":"211.07"}
+Found product price. Net: 171.6, Gross: 211.07
+FINAL: Returning Net: 171.6, Gross: 211.07
+---
+---
+START getEffectivePrice for product 7, client 
+Client price not found or not set, falling back to product price.
+Product price query executed. Found: {"price_net":"233.20","price_gross":"286.84"}
+Found product price. Net: 233.2, Gross: 286.84
+FINAL: Returning Net: 233.2, Gross: 286.84
+---
diff --git a/includes/i18n.php b/includes/i18n.php
index aaff879..3e1feb1 100644
--- a/includes/i18n.php
+++ b/includes/i18n.php
@@ -185,6 +185,14 @@ $translations = [
         'chat_hello' => 'Cześć! W czym mogę dzisiaj pomóc?',
         'chat_placeholder' => 'Wpisz swoją wiadomość...',
         'chat_send_button' => 'Wyślij',
+        'change_password' => 'Zmiana hasła',
+        'current_password' => 'Aktualne hasło',
+        'new_password' => 'Nowe hasło',
+        'confirm_new_password' => 'Potwierdź nowe hasło',
+        'change_password_btn' => 'Zmień hasło',
+        'password_changed_successfully' => 'Hasło zostało zmienione pomyślnie.',
+        'passwords_do_not_match' => 'Nowe hasła nie są zgodne.',
+        'incorrect_current_password' => 'Nieprawidłowe aktualne hasło.',
     ],
     'en' => [
         'login_header' => 'Login',
@@ -367,9 +375,22 @@ $translations = [
         'chat_hello' => 'Hello! How can I help you today?',
         'chat_placeholder' => 'Type your message...',
         'chat_send_button' => 'Send',
+        'change_password' => 'Change Password',
+        'current_password' => 'Current Password',
+        'new_password' => 'New Password',
+        'confirm_new_password' => 'Confirm New Password',
+        'change_password_btn' => 'Change Password',
+        'password_changed_successfully' => 'Password changed successfully.',
+        'passwords_do_not_match' => 'New passwords do not match.',
+        'incorrect_current_password' => 'Incorrect current password.',
     ],
 ];
 
+function get_primary_language() {
+    global $supported_languages;
+    return $supported_languages[0] ?? 'en';
+}
+
 function get_lang() {
     global $default_language;
     return $_SESSION['lang'] ?? $default_language;
@@ -388,8 +409,9 @@ function t(string $key): string {
     if (isset($translations[$lang][$key])) {
         return $translations[$lang][$key];
     }
-    if (isset($translations['pl'][$key])) {
-        return $translations['pl'][$key];
+    $primary_lang = get_primary_language();
+    if (isset($translations[$primary_lang][$key])) {
+        return $translations[$primary_lang][$key];
     }
     return "[missing:$key]";
 }
diff --git a/includes/init.php b/includes/init.php
index 0361711..b177425 100644
--- a/includes/init.php
+++ b/includes/init.php
@@ -9,7 +9,7 @@ require_once __DIR__ . '/../db/config.php';
 require_once __DIR__ . '/helpers.php';
 require_once __DIR__ . '/currency.php';
 
-if (isset($_GET['lang'])) {
+if ($_SERVER['REQUEST_METHOD'] === 'GET' && isset($_GET['lang'])) {
     set_lang($_GET['lang']);
     $uri = $_SERVER['REQUEST_URI'];
     $url_parts = parse_url($uri);
diff --git a/mail/MailService.php b/mail/MailService.php
index 42c97ed..27bca77 100644
--- a/mail/MailService.php
+++ b/mail/MailService.php
@@ -88,6 +88,7 @@ class MailService
 
         $mail = new PHPMailer\PHPMailer\PHPMailer(true);
         try {
+            $mail->CharSet = 'UTF-8';
             $mail->isSMTP();
             $mail->Host       = $cfg['smtp_host'] ?? '';
             $mail->Port       = (int)($cfg['smtp_port'] ?? 587);
@@ -203,6 +204,7 @@ class MailService
     {
         $mail = new PHPMailer\PHPMailer\PHPMailer(true);
         try {
+            $mail->CharSet = 'UTF-8';
             $mail->isSMTP();
             $mail->Host       = $cfg['smtp_host'] ?? '';
             $mail->Port       = (int)($cfg['smtp_port'] ?? 587);
@@ -211,6 +213,7 @@ class MailService
             if ($secure === 'ssl') $mail->SMTPSecure = PHPMailer\PHPMailer\PHPMailer::ENCRYPTION_SMTPS;
             elseif ($secure === 'tls') $mail->SMTPSecure = PHPMailer\PHPMailer\PHPMailer::ENCRYPTION_STARTTLS;
             $mail->SMTPSecure = false;
+
             $mail->SMTPAuth   = true;
             $mail->Username   = $cfg['smtp_user'] ?? '';
             $mail->Password   = $cfg['smtp_pass'] ?? '';
diff --git a/order_process.php b/order_process.php
index 1da7ea3..d9344c3 100644
--- a/order_process.php
+++ b/order_process.php
@@ -213,8 +213,14 @@ try {
 
         // 3. Client - Payment Instructions (Bank Transfer)
         if ($_POST['payment_method'] === 'bank_transfer') {
-            // TODO: Fetch bank details from a settings table or config
-            $bank_account_details = "Bank: Example Bank\nAccount Number: 123456789";
+            // Fetch bank details from the settings table
+            $stmt = $pdo->query("SELECT `key`, `value` FROM settings WHERE `key` IN ('bank_name', 'bank_account_number')");
+            $settings = $stmt->fetchAll(PDO::FETCH_KEY_PAIR);
+            
+            $bank_name = $settings['bank_name'] ?? '';
+            $bank_account_number = $settings['bank_account_number'] ?? '';
+
+            $bank_account_details = "Bank: " . $bank_name . "\nAccount Number: " . $bank_account_number;
             $transfer_title = "Order #{$order_id}";
             $payment_deadline = date('Y-m-d', strtotime('+7 days'));
 
diff --git a/profile.php b/profile.php
index d21751c..7cf6ea4 100644
--- a/profile.php
+++ b/profile.php
@@ -5,6 +5,32 @@ require_login();
 $user_id = $_SESSION['user_id'];
 $db = db();
 
+$success_message = '';
+$error_message = '';
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['change_password'])) {
+    $current_password = $_POST['current_password'];
+    $new_password = $_POST['new_password'];
+    $confirm_password = $_POST['confirm_password'];
+
+    $stmt = $db->prepare("SELECT password_hash FROM users WHERE id = ?");
+    $stmt->execute([$user_id]);
+    $user = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if ($user && password_verify($current_password, $user['password_hash'])) {
+        if ($new_password === $confirm_password) {
+            $hashed_password = password_hash($new_password, PASSWORD_DEFAULT);
+            $stmt = $db->prepare("UPDATE users SET password_hash = ? WHERE id = ?");
+            $stmt->execute([$hashed_password, $user_id]);
+            $success_message = t('password_changed_successfully');
+        } else {
+            $error_message = t('passwords_do_not_match');
+        }
+    } else {
+        $error_message = t('incorrect_current_password');
+    }
+}
+
 // Fetch user data
 $stmt = $db->prepare("SELECT * FROM users WHERE id = ?");
 $stmt->execute([$user_id]);
@@ -29,6 +55,12 @@ require_once __DIR__ . '/includes/header.php';
                 <h3><?= t('profile_user_profile') ?></h3>
             </div>
             <div class="card-body">
+                <?php if ($success_message): ?>
+                    <div class="alert alert-success"><?= $success_message ?></div>
+                <?php endif; ?>
+                <?php if ($error_message): ?>
+                    <div class="alert alert-danger"><?= $error_message ?></div>
+                <?php endif; ?>
                 <?php if ($user): ?>
                     <div class="row">
                         <div class="col-md-6">
@@ -47,8 +79,22 @@ require_once __DIR__ . '/includes/header.php';
                             </ul>
                         </div>
                         <div class="col-md-6">
-                            <h4><?= t('profile_password_management') ?></h4>
-                            <p><?= t('profile_feature_in_preparation') ?></p>
+                            <h4><?= t('change_password') ?></h4>
+                            <form method="post">
+                                <div class="mb-3">
+                                    <label for="current_password" class="form-label"><?= t('current_password') ?></label>
+                                    <input type="password" class="form-control" id="current_password" name="current_password" required>
+                                </div>
+                                <div class="mb-3">
+                                    <label for="new_password" class="form-label"><?= t('new_password') ?></label>
+                                    <input type="password" class="form-control" id="new_password" name="new_password" required>
+                                </div>
+                                <div class="mb-3">
+                                    <label for="confirm_password" class="form-label"><?= t('confirm_new_password') ?></label>
+                                    <input type="password" class="form-control" id="confirm_password" name="confirm_password" required>
+                                </div>
+                                <button type="submit" name="change_password" class="btn btn-primary"><?= t('change_password_btn') ?></button>
+                            </form>
                         </div>
                     </div>
                 <?php else: ?>
diff --git a/test.log b/test.log
new file mode 100644
index 0000000..061ee5c
--- /dev/null
+++ b/test.log
@@ -0,0 +1 @@
+Hello from test.php
\ No newline at end of file
diff --git a/test.php b/test.php
new file mode 100644
index 0000000..d924279
--- /dev/null
+++ b/test.php
@@ -0,0 +1,3 @@
+<?php
+file_put_contents('/home/ubuntu/executor/workspace/test.log', 'Hello from test.php');
+echo 'Hello from test.php';
diff --git a/test_permissons.log b/test_permissons.log
new file mode 100644
index 0000000..e69de29