diff --git a/modules/billing/admin.php b/modules/billing/admin.php
index 7b6d4ab0..42b0bf1b 100644
--- a/modules/billing/admin.php
+++ b/modules/billing/admin.php
@@ -55,8 +55,6 @@ function h($s){ return htmlspecialchars((string)$s, ENT_QUOTES, 'UTF-8'); }
   <a class="gsw-btn" href="admin_payments.php">Transaction Log</a>
   <a class="gsw-btn" href="admin_coupons.php">Manage Coupons</a>
   <a class="gsw-btn" href="admin_config.php">Edit Site Config</a>
-  <a class="gsw-btn" href="admin_xml_editor.php">XML Config Editor</a>
-  <a class="gsw-btn" href="docs/xml_notes.php">XML Config Guide</a>
   </div>
 
   <hr>
diff --git a/modules/billing/admin_coupons.php b/modules/billing/admin_coupons.php
index e1d7678e..fb161aca 100644
--- a/modules/billing/admin_coupons.php
+++ b/modules/billing/admin_coupons.php
@@ -160,29 +160,120 @@ $coupons_result = mysqli_query($db, "SELECT * FROM {$table_prefix}billing_coupon
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="stylesheet" href="css/header.css">
   <style>
-    .coupon-form { background: #f5f5f5; padding: 20px; margin: 20px 0; border-radius: 5px; }
+    /* Coupon admin — dark-theme overrides */
+    .coupon-form {
+      background: rgba(0,0,0,0.35);
+      border: 1px solid rgba(255,255,255,0.1);
+      padding: 20px;
+      margin: 20px 0;
+      border-radius: 8px;
+    }
     .form-group { margin-bottom: 15px; }
-    .form-group label { display: block; margin-bottom: 5px; font-weight: bold; }
-    .form-group input, .form-group select, .form-group textarea { width: 100%; padding: 8px; box-sizing: border-box; }
+    .form-group label {
+      display: block;
+      margin-bottom: 6px;
+      font-weight: 600;
+      color: #e8e8e8;
+    }
+    .form-group input,
+    .form-group select,
+    .form-group textarea {
+      width: 100%;
+      padding: 9px 10px;
+      box-sizing: border-box;
+      background: #11141f;
+      color: #f0f0f0;
+      border: 1px solid rgba(255,255,255,0.18);
+      border-radius: 5px;
+      font-size: 0.97rem;
+    }
+    .form-group input::placeholder,
+    .form-group textarea::placeholder {
+      color: rgba(255,255,255,0.4);
+    }
+    .form-group input:focus,
+    .form-group select:focus,
+    .form-group textarea:focus {
+      outline: none;
+      border-color: #667eea;
+      box-shadow: 0 0 0 2px rgba(102,126,234,0.25);
+    }
     .form-group textarea { min-height: 60px; }
-    .game-checkboxes { max-height: 200px; overflow-y: auto; border: 1px solid #ddd; padding: 10px; background: white; }
-    .game-checkboxes label { display: block; margin: 5px 0; font-weight: normal; }
-    .coupon-table { width: 100%; border-collapse: collapse; margin: 20px 0; }
-    .coupon-table th, .coupon-table td { border: 1px solid #ddd; padding: 10px; text-align: left; }
-    .coupon-table th { background: #4CAF50; color: white; }
-    .coupon-table tr:nth-child(even) { background: #f9f9f9; }
-    .btn { padding: 8px 16px; margin: 2px; cursor: pointer; border: none; border-radius: 3px; }
-    .btn-primary { background: #4CAF50; color: white; }
-    .btn-warning { background: #ff9800; color: white; }
-    .btn-danger { background: #f44336; color: white; }
-    .status { padding: 10px; margin: 10px 0; border-radius: 3px; }
-    .status.success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
-    .status.error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
-    .badge { padding: 3px 8px; border-radius: 3px; font-size: 0.85em; }
-    .badge-active { background: #28a745; color: white; }
-    .badge-inactive { background: #6c757d; color: white; }
-    .badge-onetime { background: #17a2b8; color: white; }
-    .badge-permanent { background: #ffc107; color: black; }
+    .game-checkboxes {
+      max-height: 200px;
+      overflow-y: auto;
+      border: 1px solid rgba(255,255,255,0.15);
+      padding: 10px;
+      background: rgba(0,0,0,0.4);
+      border-radius: 5px;
+    }
+    .game-checkboxes label {
+      display: block;
+      margin: 5px 0;
+      font-weight: normal;
+      color: #d0d0d0;
+      cursor: pointer;
+    }
+    .game-checkboxes input[type="checkbox"] {
+      width: auto;
+      margin-right: 6px;
+      background: #11141f;
+      border: 1px solid rgba(255,255,255,0.25);
+    }
+    .coupon-table {
+      width: 100%;
+      border-collapse: collapse;
+      margin: 20px 0;
+    }
+    .coupon-table th,
+    .coupon-table td {
+      border: 1px solid rgba(255,255,255,0.1);
+      padding: 10px 12px;
+      text-align: left;
+      color: #e8e8e8;
+    }
+    .coupon-table th { background: rgba(76,175,80,0.25); color: #fff; }
+    .coupon-table tr:nth-child(even) td { background: rgba(255,255,255,0.03); }
+    .coupon-table tr:hover td { background: rgba(255,255,255,0.06); }
+    .btn { padding: 8px 16px; margin: 2px; cursor: pointer; border: none; border-radius: 4px; font-weight: 600; }
+    .btn-primary { background: linear-gradient(135deg,#667eea,#764ba2); color: #fff; }
+    .btn-warning { background: #ff9800; color: #fff; }
+    .btn-danger  { background: #f44336; color: #fff; }
+    .status { padding: 10px 14px; margin: 10px 0; border-radius: 5px; }
+    .status.success { background: rgba(40,167,69,0.2); color: #8dffb0; border: 1px solid rgba(40,167,69,0.35); }
+    .status.error   { background: rgba(220,53,69,0.2); color: #ffb3b8; border: 1px solid rgba(220,53,69,0.35); }
+    .badge { padding: 3px 8px; border-radius: 3px; font-size: 0.85em; font-weight: 600; }
+    .badge-active    { background: #28a745; color: #fff; }
+    .badge-inactive  { background: #6c757d; color: #fff; }
+    .badge-onetime   { background: #17a2b8; color: #fff; }
+    .badge-permanent { background: #ffc107; color: #000; }
+
+    /* Inline select/option elements inside table rows */
+    .coupon-table select { background: #11141f; color: #f0f0f0; border: 1px solid rgba(255,255,255,0.18); border-radius: 4px; padding: 4px 6px; }
+
+    /* Mobile: stack table cells */
+    @media (max-width: 768px) {
+      .coupon-table, .coupon-table thead, .coupon-table tbody,
+      .coupon-table th, .coupon-table td, .coupon-table tr { display: block; }
+      .coupon-table thead tr { display: none; }
+      .coupon-table td {
+        position: relative;
+        padding-left: 45%;
+        border: none;
+        border-bottom: 1px solid rgba(255,255,255,0.07);
+      }
+      .coupon-table td::before {
+        position: absolute;
+        left: 10px;
+        width: 40%;
+        white-space: nowrap;
+        font-weight: 600;
+        color: rgba(255,255,255,0.55);
+        font-size: 0.82rem;
+        content: attr(data-label);
+      }
+      .coupon-table tr { border: 1px solid rgba(255,255,255,0.1); border-radius: 6px; margin-bottom: 12px; }
+    }
   </style>
   <script>
     function toggleGameFilter(selectEl) {
@@ -313,35 +404,35 @@ include(__DIR__ . '/includes/menu.php');
         ?>
           <!-- View Row -->
           <tr id="view-row-<?php echo $coupon['coupon_id']; ?>">
-            <td><strong><?php echo h($coupon['code']); ?></strong></td>
-            <td><?php echo h($coupon['name']); ?></td>
-            <td><?php echo h($coupon['discount_percent']); ?>%</td>
-            <td>
+            <td data-label="Code"><strong><?php echo h($coupon['code']); ?></strong></td>
+            <td data-label="Name"><?php echo h($coupon['name']); ?></td>
+            <td data-label="Discount"><?php echo h($coupon['discount_percent']); ?>%</td>
+            <td data-label="Type">
               <span class="badge badge-<?php echo $coupon['usage_type'] === 'permanent' ? 'permanent' : 'onetime'; ?>">
                 <?php echo h(ucfirst(str_replace('_', ' ', $coupon['usage_type']))); ?>
               </span>
             </td>
-            <td>
+            <td data-label="Games">
               <?php if ($coupon['game_filter_type'] === 'all_games'): ?>
                 All Games
               <?php else: ?>
                 <?php echo count((array)$games_filtered); ?> specific games
               <?php endif; ?>
             </td>
-            <td>
+            <td data-label="Uses">
               <?php if ($coupon['max_uses']): ?>
                 <?php echo h($coupon['current_uses']); ?> / <?php echo h($coupon['max_uses']); ?>
               <?php else: ?>
                 <?php echo h($coupon['current_uses']); ?> (unlimited)
               <?php endif; ?>
             </td>
-            <td><?php echo $coupon['expires'] ? h($coupon['expires']) : 'Never'; ?></td>
-            <td>
+            <td data-label="Expires"><?php echo $coupon['expires'] ? h($coupon['expires']) : 'Never'; ?></td>
+            <td data-label="Status">
               <span class="badge badge-<?php echo $coupon['is_active'] ? 'active' : 'inactive'; ?>">
                 <?php echo $coupon['is_active'] ? 'Active' : 'Inactive'; ?>
               </span>
             </td>
-            <td>
+            <td data-label="Actions">
               <button onclick="editCoupon(<?php echo $coupon['coupon_id']; ?>)" class="btn btn-warning">Edit</button>
               <form method="POST" style="display:inline;" onsubmit="return confirm('Delete this coupon?');">
                 <input type="hidden" name="csrf" value="<?php echo h($csrf); ?>">
diff --git a/modules/billing/cart.php b/modules/billing/cart.php
index 1483423a..a9b05516 100644
--- a/modules/billing/cart.php
+++ b/modules/billing/cart.php
@@ -509,7 +509,7 @@ $siteBase = $protocol . $host;
     <!-- Favicon -->
     <link rel="icon" href="images/logo-sm.png" type="image/png">
     <link rel="apple-touch-icon" href="images/logo-sm.png">
-    <?php if (!$cart_empty): ?>
+    <?php if (!$cart_empty && !empty($client_id)): ?>
     <script src="https://www.paypal.com/sdk/js?client-id=<?php echo htmlspecialchars($client_id); ?>&currency=USD&intent=capture"></script>
     <?php endif; ?>
 </head>
@@ -643,11 +643,30 @@ $siteBase = $protocol . $host;
             <?php else: ?>
             <div class="checkout-section">
                 <h3>Checkout with PayPal</h3>
+                <?php if (empty($client_id)): ?>
+                <div class="alert alert-error">
+                    <strong>Checkout Unavailable:</strong> PayPal has not been configured for this site.
+                    Please contact the site administrator or try again later.
+                    <?php
+                    // Admin hint: only show config link if the current user is an admin
+                    $cart_user_id_check = intval($_SESSION['website_user_id'] ?? 0);
+                    $cart_is_admin = false;
+                    if ($cart_user_id_check > 0 && $db) {
+                        $ar = mysqli_query($db, "SELECT users_role FROM {$table_prefix}users WHERE user_id = " . $cart_user_id_check . " LIMIT 1");
+                        if ($ar && ($arow = mysqli_fetch_assoc($ar))) {
+                            $cart_is_admin = strtolower($arow['users_role'] ?? '') === 'admin';
+                        }
+                    }
+                    if ($cart_is_admin):
+                    ?>
+                    <br><small><em>Admin: set <code>$paypal_client_id</code> in <a href="/admin_config.php" style="color:inherit;text-decoration:underline;">Site Config</a>.</em></small>
+                    <?php endif; ?>
+                </div>
+                <?php else: ?>
                 <p>Click the button below to complete your purchase securely through PayPal.</p>
-                
                 <div id="paypal-button-container"></div>
                 <div id="status-message" class="status-message"></div>
-                
+                <?php endif; ?>
                 <div class="action-buttons">
                     <a href="/order.php" class="btn btn-secondary">Continue Shopping</a>
                     <a href="/my_account.php" class="btn btn-secondary">My Account</a>
@@ -665,7 +684,7 @@ $siteBase = $protocol . $host;
                 }
             </script>
 
-            <?php if ($final_amount > 0.00): ?>
+            <?php if ($final_amount > 0.00 && !empty($client_id)): ?>
             <script>
                 paypal.Buttons({
                     createOrder: function(data, actions) {
diff --git a/modules/billing/includes/menu.php b/modules/billing/includes/menu.php
index 2eec7685..d59c3afe 100644
--- a/modules/billing/includes/menu.php
+++ b/modules/billing/includes/menu.php
@@ -16,6 +16,7 @@ $nav_prefix = '';
 $scriptName = $_SERVER['SCRIPT_NAME'] ?? '';
 if (is_string($scriptName) && $scriptName !== '') {
   if (preg_match('#/modules/billing/(.*)$#', $scriptName, $match)) {
+    // Panel-embedded or non-root deployment: depth relative to modules/billing/
     $subPath = $match[1];
     if ($subPath !== '') {
       $depth = substr_count($subPath, '/');
@@ -23,6 +24,17 @@ if (is_string($scriptName) && $scriptName !== '') {
         $nav_prefix = str_repeat('../', $depth);
       }
     }
+  } else {
+    // Root deployment: compute prefix from the script's directory depth so that
+    // links such as index.php correctly resolve to /index.php even when the
+    // current page lives in a subdirectory like /docs/.
+    $dir = dirname($scriptName);
+    if ($dir !== '/' && $dir !== '' && $dir !== '.') {
+      $segments = array_filter(explode('/', $dir), static function ($s) { return $s !== ''; });
+      if (!empty($segments)) {
+        $nav_prefix = str_repeat('../', count($segments));
+      }
+    }
   }
 }
 $nav_prefix = $nav_prefix ?: '';
diff --git a/modules/billing/timestamp.txt b/modules/billing/timestamp.txt
index f498fa7b..52fc9e18 100644
--- a/modules/billing/timestamp.txt
+++ b/modules/billing/timestamp.txt
@@ -1 +1 @@
-Last Updated at 5:10pm on 2026-05-04
+Last Updated at 3:18pm on 2026-05-06
diff --git a/modules/config_games/config_servers.php b/modules/config_games/config_servers.php
index e7d33dc0..c910815a 100644
--- a/modules/config_games/config_servers.php
+++ b/modules/config_games/config_servers.php
@@ -550,6 +550,7 @@ function exec_ogp_module() {
     $game_cfgs = $db->getGameCfgs();
     echo "<h2>".get_lang('game_config_setup')."</h2>\n
           <p>".get_lang_f("modify_configs_info",SERVER_CONFIG_LOCATION)."</p>\n
+          <p><a href='https://gameservers.world/docs/xml_notes.php' target='_blank' rel='noopener noreferrer' class='xml-jump-link'>&#x1F4D6; XML Config Reference Guide</a></p>\n
 		  <form action='?m=config_games' method='post'>\n
           <p><input id='reset_old_configs' type='checkbox' name='clear_old' value='yes' /><label for='reset_old_configs'>".get_lang('reset_old_configs')."</label></p>\n
           <p class='note'>".get_lang('note').": ".get_lang('config_reset_warning')."</p>\n