diff --git a/api/pay.php b/api/pay.php
index 06ebd14..ea53561 100644
--- a/api/pay.php
+++ b/api/pay.php
@@ -524,6 +524,7 @@ function queryOrder($token) {
         'money'        => $row['money'],
         'bonds'        => (int)$row['bond_amount'],
         'paid_at'      => $row['paid_at'],
+        'created_at'   => $row['created_at'],
     ], $message);
 }
 
@@ -542,6 +543,9 @@ try {
         case 'pay_redirect':
             handlePayRedirect();   // 内部已 exit
             break;
+        case 'sync_poller':
+            syncPoller(getParam('token'));
+            break;
         case 'query_order':
             queryOrder(getParam('token'));
             break;
diff --git a/api/poller_online.php b/api/poller_online.php
index 6a5baa7..4b66ca6 100644
--- a/api/poller_online.php
+++ b/api/poller_online.php
@@ -85,11 +85,16 @@ function getSQLite() {
 function getPlatformDB() {
     static $pdo = null;
     if ($pdo === null) {
-        $dsn = "mysql:host={$GLOBALS['PLATFORM_DB_HOST']};dbname={$GLOBALS['PLATFORM_DB_NAME']};charset=utf8mb4";
-        $pdo = new PDO($dsn, $GLOBALS['PLATFORM_DB_USER'], $GLOBALS['PLATFORM_DB_PASS'], [
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::ATTR_TIMEOUT => 5,
-        ]);
+        try {
+            $dsn = "mysql:host={$GLOBALS['PLATFORM_DB_HOST']};dbname={$GLOBALS['PLATFORM_DB_NAME']};charset=utf8mb4";
+            $pdo = new PDO($dsn, $GLOBALS['PLATFORM_DB_USER'], $GLOBALS['PLATFORM_DB_PASS'], [
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::ATTR_TIMEOUT => 5,
+            ]);
+        } catch (Exception $e) {
+            debugLog("Platform DB connection failed", ['error' => $e->getMessage()]);
+            throw $e; // re-throw to be caught by pollPaidOrders
+        }
     }
     return $pdo;
 }
@@ -267,5 +272,10 @@ function markNotified($pdo, $tradeNo) {
 // 不在此处自动执行补单（由调用方自行决定何时触发）。
 if (!defined('POLLER_NO_AUTO_RUN')) {
     header('Content-Type: application/json; charset=utf-8');
-    pollPaidOrders();
+    try {
+        pollPaidOrders();
+    } catch (\Throwable $e) {
+        debugLog('[poller_online] 未捕获异常', ['error' => $e->getMessage(), 'file' => $e->getFile(), 'line' => $e->getLine()]);
+        echo json_encode(['error' => 'uncaught_exception', 'detail' => $e->getMessage()]);
+    }
 }
diff --git a/player.php b/player.php
index 542c46a..6eae0b6 100644
--- a/player.php
+++ b/player.php
@@ -1113,6 +1113,17 @@ if ($currentVersion !== $BUILD_VERSION) {
                             btn.textContent = '✅ 支付完成';
                             btn.onclick = null;
                         } else if (res.data.status === 'created') {
+                            // 检查订单是否已过期（5分钟）
+                            const nowSec = Math.floor(Date.now() / 1000);
+                            const createdAt = res.data.created_at || 0;
+                            if (createdAt && (nowSec - createdAt) > 300) {
+                                // 已过期：清除本地记录，重置按钮
+                                localStorage.removeItem('sdf1_last_recharge_no');
+                                st.innerHTML = '<span style="color:var(--yellow)">订单已过期（超过5分钟），请重新下单。</span>';
+                                btn.disabled = false;
+                                btn.textContent = '🅰️ 支付宝支付 ¥0.01';
+                                btn.onclick = startRecharge;
+                            } else {
                             // 未支付：显示继续支付
                             btn.textContent = '🔄 继续支付 ¥' + (res.data.money || '0.01');
                             btn.onclick = async function() {
@@ -1140,6 +1151,7 @@ if ($currentVersion !== $BUILD_VERSION) {
                             };
                             st.innerHTML = '<span style="color:var(--yellow)">⚠️ 您有一笔未完成的订单，<a href="javascript:void(0)" onclick="document.getElementById(\'rechargeBtn\').click()" style="color:var(--accent)">点此继续支付</a></span>';
                             document.getElementById('rechargeQueryBtn').style.display = 'block';
+                            }
                         }
                         // 如果是 expired 或其他状态，不处理，保持默认按钮
                     }