fix payment addy bug

README.md

@@ -392,14 +392,35 @@ The systemd hardening options:
 - `PrivateTmp=yes` - isolates /tmp
 - `ReadWritePaths` - whitelists writable directories
 
-### Reverse Proxy
+### Reverse Proxy (Nginx Proxy Manager)
 
-Use your existing reverse proxy (Nginx Proxy Manager, Caddy, Traefik, etc.) to forward traffic to port 3000. Key settings for WebSocket support:
+If using Nginx Proxy Manager:
 
-- Enable WebSocket proxying
-- Set timeout to at least 86400s for long-lived connections
-- Forward `/socket.io/` path to the backend
-- Optionally protect `/admin.html` with authentication
+1. **Add Proxy Host**
+   - Domain Names: `yourdomain.com`
+   - Scheme: `http`
+   - Forward Hostname/IP: Your server's LAN IP (e.g., `192.168.1.100`)
+   - Forward Port: `3000`
+   - Enable "Websockets Support" toggle
+
+2. **SSL Tab**
+   - Request a new SSL certificate
+   - Enable "Force SSL"
+
+3. **Advanced Tab** - Paste this config for WebSocket support:
+
+```nginx
+location /socket.io/ {
+    proxy_pass http://192.168.1.100:3000;
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_read_timeout 86400s;
+    proxy_send_timeout 86400s;
+}
+```
 
 ---
 

src/game/gameModeManager.js

@@ -333,6 +333,17 @@ class GameModeManager {
         return result.rows[0] || null;
     }
 
+    /**
+     * Convert package info to JSON-safe format (BigInt price -> Number)
+     */
+    _serializePackageInfo(packageInfo) {
+        if (!packageInfo) return null;
+        return {
+            ...packageInfo,
+            price: typeof packageInfo.price === 'bigint' ? Number(packageInfo.price) : packageInfo.price
+        };
+    }
+
     _mapPaymentRowToRequest(row, paymentType, packageInfo) {
         if (!row) return null;
         const amount = Number(row.expected_amount);
@@ -345,7 +356,7 @@ class GameModeManager {
             expiresAt: row.expires_at,
             paymentType,
             description: row.description,
-            package: packageInfo || null,
+            package: this._serializePackageInfo(packageInfo),
             reused: true
         };
     }
@@ -876,7 +887,7 @@ class GameModeManager {
                 amountFormatted: this.formatAtomicHuman(amount, 4),
                 currency: this.cryptoType,
                 expiresAt: insertedRow?.expires_at || expiresAt,
-                package: packageInfo,
+                package: this._serializePackageInfo(packageInfo),
                 paymentType,
                 description,
                 reused: false