diff --git a/admin/customer_service.php b/admin/customer_service.php
index ac3c97c..97afce0 100644
--- a/admin/customer_service.php
+++ b/admin/customer_service.php
@@ -313,6 +313,9 @@ let currentUserContext = '';
 let lastMsgCount = 0;
 let notifySound = new Audio('https://assets.mixkit.co/active_storage/sfx/2358/2358-preview.mp3');
 
+// Get API path dynamically
+const apiPath = (window.location.origin + window.location.pathname).split('/admin/')[0] + '/api/';
+
     async function refreshUsers() {
         try {
             const list = document.getElementById('user-list');
@@ -321,10 +324,17 @@ let notifySound = new Audio('https://assets.mixkit.co/active_storage/sfx/2358/23
             const searchInput = document.getElementById('user-search');
             const search = searchInput ? searchInput.value.toLowerCase() : '';
             
-            const r = await fetch('../api/chat.php?action=admin_get_all');
-            if (!r.ok) return;
+            const r = await fetch(apiPath + 'chat.php?action=admin_get_all&v=' + Date.now());
+            if (!r.ok) {
+                list.innerHTML = `<div class="p-4 text-center text-danger small">API 错误: ${r.status} ${r.statusText}</div>`;
+                return;
+            }
             
             const users = await r.json();
+            if (users.success === false) {
+                list.innerHTML = `<div class="p-4 text-center text-danger small">服务器错误: ${users.error}</div>`;
+                return;
+            }
             if (users.error || !Array.isArray(users)) return;
 
             // Sound notification for new messages based on total unread count
@@ -452,14 +462,14 @@ let notifySound = new Audio('https://assets.mixkit.co/active_storage/sfx/2358/23
         fd.append('user_id', userId);
         fd.append('ip_address', ip);
         fd.append('session_id', sid);
-        fetch('../api/chat.php?action=mark_read', { method: 'POST', body: fd }).then(() => refreshUsers());
+        fetch(apiPath + 'chat.php?action=mark_read&v=' + Date.now(), { method: 'POST', body: fd }).then(() => refreshUsers());
     }
 
 async function recallMessage(msgId) {
     if (!confirm('确定撤回该消息吗？')) return;
     const fd = new URLSearchParams();
     fd.append('message_id', msgId);
-    const r = await fetch('../api/chat.php?action=admin_recall_message', { method: 'POST', body: fd });
+    const r = await fetch(apiPath + 'chat.php?action=admin_recall_message&v=' + Date.now(), { method: 'POST', body: fd });
     const res = await r.json();
     if (res.success) {
         fetchMessages();
@@ -473,7 +483,7 @@ async function deleteChat(userId, ip, sid, event) {
     fd.append('user_id', userId);
     fd.append('ip_address', ip);
     fd.append('session_id', sid);
-    const r = await fetch('../api/chat.php?action=admin_delete_user', { method: 'POST', body: fd });
+    const r = await fetch(apiPath + 'chat.php?action=admin_delete_user&v=' + Date.now(), { method: 'POST', body: fd });
     const res = await r.json();
     if (res.success) {
         if (selectedSid == sid && selectedIp == ip && selectedUser == userId) {
@@ -500,7 +510,7 @@ async function deleteUser() {
     fd.append('user_id', selectedUser);
     fd.append('ip_address', selectedIp);
     fd.append('session_id', selectedSid);
-    const r = await fetch('../api/chat.php?action=admin_delete_user', { method: 'POST', body: fd });
+    const r = await fetch(apiPath + 'chat.php?action=admin_delete_user&v=' + Date.now(), { method: 'POST', body: fd });
     const res = await r.json();
     if (res.success) {
         selectedUser = null;
@@ -522,7 +532,7 @@ async function deleteUser() {
 async function fetchMessages() {
     if (!selectedIp && !selectedUser && !selectedSid) return;
     try {
-        const r = await fetch(`../api/chat.php?action=get_messages&user_id=${selectedUser}&ip=${selectedIp}&session_id=${selectedSid}`);
+        const r = await fetch(apiPath + `chat.php?action=get_messages&user_id=${selectedUser}&ip=${selectedIp}&session_id=${selectedSid}&v=${Date.now()}`);
         const msgs = await r.json();
         if (!msgs || !Array.isArray(msgs)) return;
 
@@ -634,7 +644,7 @@ async function notifyMatchSuccess() {
     fd.append('account', account);
 
     try {
-        const r = await fetch('../api/admin_recharge.php?action=match_success', { method: 'POST', body: fd });
+        const r = await fetch(apiPath + 'admin_recharge.php?action=match_success&v=' + Date.now(), { method: 'POST', body: fd });
         const res = await r.json();
         if (res.success) {
             alert('匹配成功！状态已更新。若要向用户显示收款账户，请继续点击“发送账户”按钮。');
@@ -663,7 +673,7 @@ async function sendPaymentInfo() {
 
     try {
         console.log('Sending account info...', { bank, name, account });
-        const r = await fetch('../api/admin_recharge.php?action=send_account', { method: 'POST', body: fd });
+        const r = await fetch(apiPath + 'admin_recharge.php?action=send_account&v=' + Date.now(), { method: 'POST', body: fd });
         const res = await r.json();
         
         if (res.success) {
@@ -709,7 +719,7 @@ document.getElementById('image-input').addEventListener('change', async (e) => {
     formData.append('session_id', selectedSid || '');
 
     try {
-        const r = await fetch('../api/chat.php?action=upload_image', {
+        const r = await fetch(apiPath + 'chat.php?action=upload_image&v=' + Date.now(), {
             method: 'POST',
             body: formData
         });
@@ -759,7 +769,7 @@ document.getElementById('chat-form').addEventListener('submit', async (e) => {
     fd.append('session_id', selectedSid);
 
     try {
-        const r = await fetch('../api/chat.php?action=admin_send', { method: 'POST', body: fd });
+        const r = await fetch(apiPath + 'chat.php?action=admin_send&v=' + Date.now(), { method: 'POST', body: fd });
         const res = await r.json();
         
         const tempMsg = document.querySelector(`[data-id="${tempId}"]`);
@@ -781,7 +791,7 @@ document.getElementById('save-remark-btn').addEventListener('click', async () =>
     fd.append('session_id', selectedSid);
     fd.append('remark', remark);
 
-    const r = await fetch('../api/chat.php?action=save_remark', { method: 'POST', body: fd });
+    const r = await fetch(apiPath + 'chat.php?action=save_remark&v=' + Date.now(), { method: 'POST', body: fd });
     const res = await r.json();
     if (res.success) {
         alert('备注已保存');
diff --git a/admin/layout.php b/admin/layout.php
index b079364..4f00f33 100644
--- a/admin/layout.php
+++ b/admin/layout.php
@@ -281,21 +281,24 @@ function renderAdminPage($content, $title = '后台管理') {
                 const visitedPages = JSON.parse(localStorage.getItem('visited_admin_pages') || '[]');
                 const currentPage = window.location.pathname;
 
+                // Detect base path for API calls
+                const apiPath = (window.location.origin + window.location.pathname).split('/admin/')[0] + '/api/';
+
                 // Clear badges based on current page
                 if (currentPage.includes('finance.php')) {
-                    fetch('../api/admin_notifications.php?action=clear&type=finance');
+                    fetch(apiPath + 'admin_notifications.php?action=clear&type=finance&v=' + Date.now());
                 } else if (currentPage.includes('kyc.php')) {
-                    fetch('../api/admin_notifications.php?action=clear&type=kyc');
+                    fetch(apiPath + 'admin_notifications.php?action=clear&type=kyc&v=' + Date.now());
                 } else if (currentPage.includes('binary.php')) {
-                    fetch('../api/admin_notifications.php?action=clear&type=binary');
+                    fetch(apiPath + 'admin_notifications.php?action=clear&type=binary&v=' + Date.now());
                 } else if (currentPage.includes('contract.php')) {
-                    fetch('../api/admin_notifications.php?action=clear&type=contract');
+                    fetch(apiPath + 'admin_notifications.php?action=clear&type=contract&v=' + Date.now());
                 } else if (currentPage.includes('spot.php')) {
-                    fetch('../api/admin_notifications.php?action=clear&type=spot');
+                    fetch(apiPath + 'admin_notifications.php?action=clear&type=spot&v=' + Date.now());
                 } else if (currentPage.includes('customer_service.php')) {
-                    fetch('../api/admin_notifications.php?action=clear&type=messages');
+                    fetch(apiPath + 'admin_notifications.php?action=clear&type=messages&v=' + Date.now());
                 } else if (currentPage.includes('users.php')) {
-                    fetch('../api/admin_notifications.php?action=clear&type=users');
+                    fetch(apiPath + 'admin_notifications.php?action=clear&type=users&v=' + Date.now());
                 }
 
                 document.querySelectorAll('.card-dismissible').forEach(card => {
@@ -351,7 +354,8 @@ function renderAdminPage($content, $title = '后台管理') {
             function checkNotifications() {
                 const currentPage = window.location.pathname;
                 const isDashboard = currentPage.includes('index.php') || currentPage.endsWith('/admin/');
-                const url = isDashboard ? '../api/admin_notifications.php?stats=1' : '../api/admin_notifications.php';
+                const apiPath = (window.location.origin + window.location.pathname).split('/admin/')[0] + '/api/';
+                const url = apiPath + 'admin_notifications.php?v=' + Date.now() + (isDashboard ? '&stats=1' : '');
                 
                 fetch(url)
                     .then(r => r.json())
diff --git a/api/chat.php b/api/chat.php
index b405aa6..7d4fd37 100644
--- a/api/chat.php
+++ b/api/chat.php
@@ -233,71 +233,55 @@ if ($action === 'admin_get_all') {
         exit;
     }
     try {
-        // Improved query to get all active chat sessions.
-        // We group by user_id if it's set (>0). 
-        // If user_id is 0, we group by session_id.
-        // If session_id is also empty, we group by IP.
+        // Simplified and robust query for deployment compatibility
         $stmt = db()->query("
             SELECT 
                 v.final_user_id as user_id, 
-                v.effective_ip as ip_address, 
-                v.effective_sid as session_id,
-                v.unread_count,
+                MAX(v.effective_ip) as ip_address, 
+                MAX(v.effective_sid) as session_id,
+                SUM(v.is_unread) as unread_count,
+                MAX(v.has_recharge) as has_recharge,
                 CASE 
                     WHEN m.message LIKE '<img%' THEN '[图片消息]' 
-                    WHEN (m.message IS NULL OR m.message = '') AND v.has_recharge = 1 THEN '[充值申请]'
+                    WHEN (m.message IS NULL OR m.message = '') AND MAX(v.has_recharge) = 1 THEN '[充值申请]'
                     ELSE COALESCE(m.message, '新会话') 
                 END as message, 
-                COALESCE(m.created_at, v.last_activity) as created_at,
-                COALESCE(u.username, u.email, CONCAT('访客 ', COALESCE(NULLIF(v.effective_ip, ''), '0.0.0.0'))) as username, 
+                COALESCE(m.created_at, MAX(v.last_activity)) as created_at,
+                COALESCE(u.username, u.email, CONCAT('访客 ', COALESCE(NULLIF(MAX(v.effective_ip), ''), '0.0.0.0'))) as username, 
                 IFNULL(u.uid, '---') as uid, 
                 IFNULL(u.registration_ip, '---') as registration_ip,
                 IFNULL(r.remark, '') as remark,
-                IFNULL(v.user_time, '---') as user_time
+                IFNULL(MAX(v.user_time), '---') as user_time
             FROM (
                 SELECT 
-                    final_user_id,
-                    SUBSTRING_INDEX(GROUP_CONCAT(effective_ip ORDER BY last_activity DESC SEPARATOR '|'), '|', 1) as effective_ip, 
-                    SUBSTRING_INDEX(GROUP_CONCAT(effective_sid ORDER BY last_activity DESC SEPARATOR '|'), '|', 1) as effective_sid,
-                    MAX(last_activity) as last_activity,
-                    MAX(user_time) as user_time,
-                    MAX(has_recharge) as has_recharge,
-                    SUM(is_unread) as unread_count
-                FROM (
-                    SELECT 
-                        IFNULL(user_id, 0) as final_user_id, 
-                        CASE WHEN ip_address = '---' THEN '' ELSE IFNULL(ip_address, '') END as effective_ip, 
-                        IFNULL(session_id, '') as effective_sid,
-                        created_at as last_activity, 
-                        NULL as user_time, 
-                        0 as has_recharge,
-                        CASE WHEN sender = 'user' AND is_read = 0 THEN 1 ELSE 0 END as is_unread
-                    FROM messages m
-                    UNION ALL
-                    SELECT 
-                        IFNULL(user_id, 0) as final_user_id, 
-                        CASE WHEN ip_address = '---' THEN '' ELSE IFNULL(ip_address, '') END as effective_ip, 
-                        IFNULL(session_id, '') as effective_sid,
-                        last_ping as last_activity, 
-                        user_time, 
-                        0 as has_recharge,
-                        0 as is_unread
-                    FROM chat_visitors cv
-                    UNION ALL
-                    SELECT 
-                        IFNULL(user_id, 0) as final_user_id, 
-                        CASE WHEN ip_address = '---' THEN '' ELSE IFNULL(ip_address, '') END as effective_ip, 
-                        '' as effective_sid,
-                        created_at as last_activity, 
-                        NULL as user_time, 
-                        1 as has_recharge,
-                        0 as is_unread
-                    FROM finance_requests fr WHERE fr.status NOT IN ('3', '4')
-                ) t1
-                GROUP BY 
-                    CASE WHEN final_user_id > 0 THEN final_user_id ELSE 0 END,
-                    CASE WHEN final_user_id = 0 THEN effective_sid ELSE '' END,
-                    CASE WHEN final_user_id = 0 AND effective_sid = '' THEN effective_ip ELSE '' END
+                    IFNULL(user_id, 0) as final_user_id, 
+                    CASE WHEN ip_address = '---' THEN '' ELSE IFNULL(ip_address, '') END as effective_ip, 
+                    IFNULL(session_id, '') as effective_sid,
+                    created_at as last_activity, 
+                    NULL as user_time, 
+                    0 as has_recharge,
+                    CASE WHEN sender = 'user' AND is_read = 0 THEN 1 ELSE 0 END as is_unread
+                FROM messages
+                UNION ALL
+                SELECT 
+                    IFNULL(user_id, 0) as final_user_id, 
+                    CASE WHEN ip_address = '---' THEN '' ELSE IFNULL(ip_address, '') END as effective_ip, 
+                    IFNULL(session_id, '') as effective_sid,
+                    last_ping as last_activity, 
+                    user_time, 
+                    0 as has_recharge,
+                    0 as is_unread
+                FROM chat_visitors
+                UNION ALL
+                SELECT 
+                    IFNULL(user_id, 0) as final_user_id, 
+                    CASE WHEN ip_address = '---' THEN '' ELSE IFNULL(ip_address, '') END as effective_ip, 
+                    '' as effective_sid,
+                    created_at as last_activity, 
+                    NULL as user_time, 
+                    1 as has_recharge,
+                    0 as is_unread
+                FROM finance_requests WHERE type='recharge' AND status NOT IN ('3', '4')
             ) v
             LEFT JOIN (
                 SELECT m1.*, 
@@ -322,6 +306,10 @@ if ($action === 'admin_get_all') {
                 (v.final_user_id = 0 AND v.effective_sid != '' AND v.effective_sid = r.session_id) OR
                 (v.final_user_id = 0 AND v.effective_sid = '' AND v.effective_ip = r.ip_address)
             )
+            GROUP BY 
+                v.final_user_id,
+                CASE WHEN v.final_user_id = 0 THEN v.effective_sid ELSE '' END,
+                CASE WHEN v.final_user_id = 0 AND v.effective_sid = '' THEN v.effective_ip ELSE '' END
             ORDER BY created_at DESC
         ");
         $results = $stmt->fetchAll();
@@ -332,7 +320,8 @@ if ($action === 'admin_get_all') {
         echo json_encode($results);
     } catch (Exception $e) {
         error_log("Chat API Error: " . $e->getMessage());
-        echo json_encode(['error' => $e->getMessage()]);
+        // Return structured error for front-end handling
+        echo json_encode(['success' => false, 'error' => $e->getMessage()]);
     }
     exit;
 }
diff --git a/assets/pasted-20260222-081324-8196b7b9.png b/assets/pasted-20260222-081324-8196b7b9.png
new file mode 100644
index 0000000..888ae69
Binary files /dev/null and b/assets/pasted-20260222-081324-8196b7b9.png differ
diff --git a/db/config.php b/db/config.php
index fd53eee..5668869 100644
--- a/db/config.php
+++ b/db/config.php
@@ -28,8 +28,13 @@ function getRealIP() {
         return $_SERVER['HTTP_X_REAL_IP'];
     }
     if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
-        $ips = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
-        return trim($ips[0]);
+        $ips = array_map('trim', explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']));
+        foreach ($ips as $ip) {
+            if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
+                return $ip;
+            }
+        }
+        return $ips[0];
     }
     return $_SERVER['REMOTE_ADDR'];
 }
diff --git a/recharge.php b/recharge.php
index b4064c2..7b0da33 100644
--- a/recharge.php
+++ b/recharge.php
@@ -405,6 +405,7 @@ $bep20_addr = $settings['usdt_bep20_address'] ?? '0x742d35Cc6634C0532925a3b844Bc
 let currentNetwork = 'TRC20';
 let currentAddress = '<?= $trc20_addr ?>';
 const userId = '<?= $user['uid'] ?? $user['id'] ?>';
+const apiPath = (window.location.origin + window.location.pathname).split('/recharge.php')[0] + '/api/';
 let rechargeCountdownInterval;
 let modalChatLastIds = new Set();
 let remainingSeconds = 1800;
@@ -430,7 +431,7 @@ async function updateRate() {
     
     // Try to get fresh rates
     try {
-        const resp = await fetch('api/exchange.php');
+        const resp = await fetch(apiPath + 'exchange.php?v=' + Date.now());
         const data = await resp.json();
         if (data.success && data.rates) {
             exchangeRates = data.rates;
@@ -496,7 +497,7 @@ function finishTransfer() {
         const formData = new FormData();
         formData.append('action', 'complete_transfer');
         formData.append('order_id', orderId);
-        fetch('api/finance.php', { method: 'POST', body: formData })
+        fetch(apiPath + 'finance.php?v=' + Date.now(), { method: 'POST', body: formData })
             .then(r => r.json())
             .then(data => { if (data.success) renderRechargeUI({status: 'finished'}); });
     } else {
@@ -552,8 +553,7 @@ function startStatusPolling(order_id) {
         const modalEl = document.getElementById('rechargeModal');
         if (!modalEl || !modalEl.classList.contains('show')) return;
         try {
-            const path = (window.REL_PATH || '') + `api/recharge_status.php?id=${order_id}&_t=${Date.now()}`;
-            const r = await fetch(path);
+            const r = await fetch(apiPath + `recharge_status.php?id=${order_id}&v=${Date.now()}`);
             const data = await r.json();
             if (data.success) {
                 console.log('Order status update:', data.status, data);
@@ -745,7 +745,7 @@ function initModalChat() {
         scrollModalToBottom();
         const formData = new FormData(); formData.append('file', file); formData.append('action', 'upload_image');
         try {
-            const resp = await fetch('api/chat.php', { method: 'POST', body: formData }), data = await resp.json();
+            const resp = await fetch(apiPath + 'chat.php?v=' + Date.now(), { method: 'POST', body: formData }), data = await resp.json();
             document.querySelector(`[data-modal-id="${tempId}"]`)?.remove();
             if (data.success) { appendModalMessage(data.message); scrollModalToBottom(); }
         } catch (err) { console.error(err); }
@@ -757,7 +757,7 @@ function initModalChat() {
         appendModalMessage({ id: tempId, sender: 'user', message: msg, created_at: new Date().toISOString() });
         scrollModalToBottom();
         try {
-            const resp = await fetch('api/chat.php?action=send_message', { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, body: `message=${encodeURIComponent(msg)}` });
+            const resp = await fetch(apiPath + 'chat.php?action=send_message&v=' + Date.now(), { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, body: `message=${encodeURIComponent(msg)}` });
             const data = await resp.json();
             document.querySelector(`[data-modal-id="${tempId}"]`)?.remove();
             if (data.success) { appendModalMessage(data.message); scrollModalToBottom(); }
@@ -769,8 +769,8 @@ function initModalChat() {
             return;
         }
         try {
-            fetch(`api/chat.php?action=ping&user_time=${encodeURIComponent(new Date().toLocaleString())}`);
-            const resp = await fetch('api/chat.php?action=get_messages'), data = await resp.json();
+            fetch(apiPath + `chat.php?action=ping&user_time=${encodeURIComponent(new Date().toLocaleString())}&v=` + Date.now());
+            const resp = await fetch(apiPath + 'chat.php?action=get_messages&v=' + Date.now()), data = await resp.json();
             if (Array.isArray(data)) { data.forEach(m => { if (!modalChatLastIds.has(m.id)) { appendModalMessage(m); modalChatLastIds.add(m.id); scrollModalToBottom(); } }); }
         } catch (err) {}
         setTimeout(modalPoll, 2000);
@@ -779,7 +779,7 @@ function initModalChat() {
 }
 
 async function sendModalMessage(msg) {
-    try { await fetch('api/chat.php?action=send_message', { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, body: `message=${encodeURIComponent(msg)}` }); } catch (err) {}
+    try { await fetch(apiPath + 'chat.php?action=send_message&v=' + Date.now(), { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, body: `message=${encodeURIComponent(msg)}` }); } catch (err) {}
 }
 
 function appendModalMessage(m) {
@@ -812,7 +812,7 @@ function confirmFiatOrder(btn, event) {
     if (isNaN(amount) || amount <= 0) { notify('warning', '<?= __("enter_amount") ?>'); return; }
     const originalText = btn.innerHTML; btn.disabled = true; btn.innerHTML = `<span class="spinner-border spinner-border-sm me-2"></span>${originalText}`;
     const formData = new FormData(); formData.append('action', 'recharge'); formData.append('amount', amount / rate); formData.append('symbol', 'USDT'); formData.append('fiat_amount', amount); formData.append('fiat_currency', currency); formData.append('method', '<?= __("fiat_recharge") ?> (' + currency + ')');
-    fetch((window.REL_PATH || '') + 'api/finance.php', { method: 'POST', body: formData }).then(r => r.json()).then(data => {
+    fetch(apiPath + 'finance.php?v=' + Date.now(), { method: 'POST', body: formData }).then(r => r.json()).then(data => {
         btn.disabled = false; btn.innerHTML = originalText;
         if (data.success) {
             let msg = `<?= __("recharge_msg_fiat") ?>`; 
@@ -832,7 +832,7 @@ function confirmCryptoOrder(btn, event) {
     if (isNaN(amount) || amount <= 0) { notify('warning', '<?= __("enter_amount") ?>'); return; }
     const originalText = btn.innerHTML; btn.disabled = true; btn.innerHTML = `<span class="spinner-border spinner-border-sm me-2"></span>${originalText}`;
     const formData = new FormData(); formData.append('action', 'recharge'); formData.append('amount', amount); formData.append('symbol', 'USDT'); formData.append('method', currentNetwork);
-    fetch((window.REL_PATH || '') + 'api/finance.php', { method: 'POST', body: formData }).then(r => r.json()).then(data => {
+    fetch(apiPath + 'finance.php?v=' + Date.now(), { method: 'POST', body: formData }).then(r => r.json()).then(data => {
         btn.disabled = false; btn.innerHTML = originalText;
         if (data.success) {
             let msg = `<?= __("recharge_msg_crypto") ?>`;