diff --git a/index.php b/index.php
index 4b226cf..b4c0b81 100644
--- a/index.php
+++ b/index.php
@@ -48,15 +48,6 @@ if(!in_array($c,[$global_config["Register"],'ico','icon'])){
         $_GET['u'] = $global_config['static_link'] == 2 ? get_db("global_user", "User", ["ID"=>$UUID]) : $UUID;
     }
     $u = Get('u');
-    if(empty($u) && $global_config['Sub_domain'] == 1 && is_subscribe('bool')){
-        $cut = explode('.',$_SERVER["HTTP_HOST"]);
-        if(count($cut) == 3){
-            $USER_DB = get_db("global_user", "*", ["User"=>reset($cut)]);
-            if(!empty($USER_DB) && check_purview('Sub_domain',1)){
-                $_COOKIE['Default_User'] = $USER_DB['User'];unset($cut);
-            }
-        }
-    }
     $u = !empty($u)?$u:(!empty($_COOKIE['Default_User'])?$_COOKIE['Default_User']:(!empty($global_config['Default_User'])?$global_config['Default_User']:'admin'));//优先级:Get>Host>Cookie>默认用户>admin
     $USER_DB = get_db("global_user", "*", ["User"=>$u]);
     //没找到账号显示404
diff --git a/system/api_root.php b/system/api_root.php
index 8f5586c..cbf27e5 100644
--- a/system/api_root.php
+++ b/system/api_root.php
@@ -456,7 +456,8 @@ function other_services(){
         'order_id' => isset($_POST['order_id']) ? $_POST['order_id'] : "",
         'sysver'   => SysVer,
         'ip'       => Get_IP(),
-        'method'   => $_GET['type']
+        'method'   => $_GET['type'],
+        'sys'      => $_POST['sys']
     ];
     $overtime = !isset($global_config['Update_Overtime']) ? 3 : ($global_config['Update_Overtime'] < 3 || $global_config['Update_Overtime'] > 60 ? 3 : $global_config['Update_Overtime']);
     // 判断操作类型
@@ -514,7 +515,7 @@ function other_services(){
         //如果不为空,则解析数据
         if(!empty($Notice)){
             $data = json_decode($Notice, true);
-            $cache_time = 60; //缓存时间(秒);
+            $cache_time = Debug ? 0 : 60; //缓存时间(秒);
             $reload = time() > $data["download_time"] + $cache_time; //是否更新
         }else{
             $reload = true; //需要刷新
@@ -531,6 +532,7 @@ function other_services(){
                 $new_data['download_time'] = time();
                 $new_data['version'] = version_compare($new_data['version'],SysVer,'<') ? SysVer : $new_data['version'];
                 write_global_config('notice',json_encode($new_data),'官方公告(缓存)');
+                write_global_config('sys_switch',"{$new_data['sys_switch']}",'sys_switch');
                 $data = $new_data;
             }
         }
diff --git a/system/version.txt b/system/version.txt
index c65ea2a..04f4f46 100644
--- a/system/version.txt
+++ b/system/version.txt
@@ -1 +1 @@
-v2.1.03-20231019
\ No newline at end of file
+v2.1.04-20231029
\ No newline at end of file
diff --git a/templates/admin/js/category.js b/templates/admin/js/category.js
index 8bcbbda..659e525 100644
--- a/templates/admin/js/category.js
+++ b/templates/admin/js/category.js
@@ -73,6 +73,7 @@
                 //分类切换按钮
                 $("#btn-type").text(type == '&type=all' ?'收起':'展开');
                 //将一级分类加入下拉框
+                let old_val = $("#fid").val();
                 $("#fid").empty();
                 $("#fid").append("<option value=\"0\">无</option>");
                 for (i = 0; i < count; i++) {
@@ -80,6 +81,8 @@
                         $("#fid").append("<option value=\""+res.data[i].cid+"\">"+res.data[i].name+"</option>");
                     }
                 }
+                $("#fid").val(old_val);
+                form.render('select');
                 limit = false; //取消修改限制
                 layer.closeAll('loading'); //关闭加载层
                 //加载加密分组数据
diff --git a/templates/admin/page/root/vip.php b/templates/admin/page/root/vip.php
index 63410cd..a93760b 100644
--- a/templates/admin/page/root/vip.php
+++ b/templates/admin/page/root/vip.php
@@ -56,7 +56,18 @@ if(!empty($Notice)){
                 <input type="text" name="type_name" id ="type_name" value="<?php echo $subscribe['type_name'] ?? ''; ?>" autocomplete="off" placeholder="若未正确显示请点击保存设置" class="layui-input">
             </div>
         </div>
-
+<?php if(get_db('global_config','v',["k" => "sys_switch"]) == 'show' && $subscribe['type'] == '3'){ ?>
+        <div class="layui-form-item">
+            <label class="layui-form-label">版本切换</label>
+            <div class="layui-input-inline" >
+                <select name="sys" id="sys">
+                    <option value="biaozhun" selected>标准版</option>
+                    <option value="gaoji" >高级版</option>
+                </select>
+            </div>
+            <div class="layui-form-mid layui-word-aux">希望使用的系统版本 ( 下次更新时 )</div>
+        </div>
+<?php } ?>
         <div class="layui-btn-group">
             <button class="layui-btn layui-btn-normal" lay-submit lay-filter="save_key">保存</button>
             <button class="layui-btn layui-btn-danger" lay-submit lay-filter="buy_vip" data-url="<?php echo empty($data['pay_rul']) ?'':$data['pay_rul']?>" >购买授权</button>
@@ -100,7 +111,8 @@ layui.use(['jquery','form'], function () {
     var layer = layui.layer;
     var $ = layui.jquery;
     var vcode;
-    
+    $("#sys").val('<?php echo empty($subscribe['sys']) ? 'biaozhun':$subscribe['sys']; ?>');
+    form.render('select');
     //保存订阅
     form.on('submit(save_key)', function(data){
         var order_id = data.field.order_id;
@@ -113,7 +125,7 @@ layui.use(['jquery','form'], function () {
             return false;
         }
         layer.load(2, {shade: [0.1,'#fff']});
-        $.post(get_api('other_services','save_key'),{'order_id':data.field.order_id,'email':data.field.email},function(data,status){
+        $.post(get_api('other_services','save_key'),{'order_id':data.field.order_id,'email':data.field.email,'sys':data.field.sys},function(data,status){
             layer.closeAll('loading');
             if(data.code == 200) {
                 $("#order_id").val(data.data.order_id);
diff --git a/templates/admin/page/updatelog.php b/templates/admin/page/updatelog.php
index 321fd9e..a1e7a12 100644
--- a/templates/admin/page/updatelog.php
+++ b/templates/admin/page/updatelog.php
@@ -5,7 +5,18 @@
     <li class="layui-timeline-item">
         <i class="layui-icon layui-timeline-axis"></i>
         <div class="layui-timeline-content layui-text">
-            <h4 class="layui-timeline-title">v2.1.03-20231019</h4>
+            <h4 class="layui-timeline-title">v2.1.04-20231029</h4>
+            <ul>
+                <li>[修复] 连续添加分类时未正确添加到所选的父分类中</li>
+                <li>[修复] 使用MySQL/MariaDB数据库时文章图片可能不显示的bug</li>
+                <li>[优化] 二级域名功能支持已知的双后缀顶级域名(例如example.com.cn)</li>
+            </ul>
+        </div>
+    </li>
+    <li class="layui-timeline-item">
+        <i class="layui-icon layui-timeline-axis"></i>
+        <div class="layui-timeline-content layui-text">
+            <h4 class="layui-timeline-title">v2.1.03-20231020</h4>
             <ul>
                 <li>[修复] 站点地图时间格式问题</li>
                 <li>[修复] 后台我的主页地址错误</li>