diff --git a/addons/shopro_wechat_trade/README.md b/addons/shopro_wechat_trade/README.md
index 56ab78a..81fe0ea 100644
--- a/addons/shopro_wechat_trade/README.md
+++ b/addons/shopro_wechat_trade/README.md
@@ -13,13 +13,38 @@
 ## 安装
 
 ```bash
-# 上传 addons/shopro_wechat_trade 后
+# 上传 addons/shopro_wechat_trade 后（推荐 SSH，不要只靠后台点启用）
 php think shopro_wechat_trade:install
 php think shopro_wechat_trade:verify
 ```
 
 后台：**系统管理 → 商城配置 → 微信交易合规**
 
+### 启用报 Permission denied / 过一阵又变关闭
+
+常见两类原因：
+
+1. **目录不可写**（截图里 `runtime/cache/... Permission denied`）  
+   后台「启用插件」会写 `info.ini`、`application/extra/addons.php`、`public/assets/js/addons.js` 并清缓存。PHP 运行用户（宝塔多为 `www`）必须可写：
+   - `runtime/`（含 `cache/`、`log/`）
+   - `addons/shopro_wechat_trade/info.ini`
+   - `application/extra/addons.php`
+   - `public/assets/js/addons.js`
+
+   ```bash
+   cd /www/wwwroot/xgsc.gynhc.com
+   chown -R www:www runtime addons application/extra public/assets/js/addons.js
+   chmod -R u+rwX runtime
+   php think shopro_wechat_trade:install
+   ```
+
+2. **代码部署覆盖 `info.ini`**  
+   仓库里若 `state = 0`，每次 git/rsync 全量同步会把线上已启用状态盖回关闭。本仓库默认 `state = 1`；若你方部署脚本会覆盖 `addons/*/info.ini`，请在服务器保留 `state = 1` 或部署后执行 `php think shopro_wechat_trade:install`。
+
+### 后台提示「文件冲突」
+
+启用时若提示与 `application/admin/.../shopro_wechat_trade/*` 冲突，属正常：插件要把后台菜单/页面复制到主工程。仓库已含这些文件时选 **继续操作** 即可；更稳的是只用 CLI `shopro_wechat_trade:install` 修复，不必反复在插件中心开关。
+
 ## 汇付配合
 
 若使用汇付小程序支付，需同步部署最新 `shopro_huifu`（支付通知会落库微信 `transaction_id`）。
diff --git a/addons/shopro_wechat_trade/info.ini b/addons/shopro_wechat_trade/info.ini
index 1e4ac5c..1607642 100644
--- a/addons/shopro_wechat_trade/info.ini
+++ b/addons/shopro_wechat_trade/info.ini
@@ -4,7 +4,7 @@ intro = 微信小程序购物订单与发货信息同步
 author = Shopro
 website = https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/order_center/order_center.html
 version = 1.0.0
-state = 0
+state = 1
 url = /addons/shopro_wechat_trade
 first_menu = shopro_wechat_trade/config
 license = regular
diff --git a/addons/shopro_wechat_trade/library/Installer.php b/addons/shopro_wechat_trade/library/Installer.php
index 2d8a106..3e73931 100644
--- a/addons/shopro_wechat_trade/library/Installer.php
+++ b/addons/shopro_wechat_trade/library/Installer.php
@@ -47,7 +47,11 @@ class Installer
             }
         }
 
-        Service::refresh();
+        try {
+            Service::refresh();
+        } catch (\Exception $e) {
+            self::log($output, '  [warn] 插件缓存刷新失败: ' . $e->getMessage());
+        }
         self::log($output, '安装完成: /admin/shopro_wechat_trade/config');
     }
 
@@ -64,8 +68,20 @@ class Installer
         } else {
             $content = rtrim($content) . "\nstate = " . $state . "\n";
         }
-        file_put_contents($file, $content, LOCK_EX);
+        if (file_put_contents($file, $content, LOCK_EX) === false) {
+            throw new \RuntimeException('无法写入 ' . $file . '，请检查 addons 目录权限（勿用 root 上传后未 chown www）');
+        }
         \think\Config::set($name, null, 'addoninfo');
+        \think\Config::set('addon-info-' . $name, null);
+
+        if ($state === 1) {
+            try {
+                Service::refresh();
+            } catch (\Exception $e) {
+                self::log($output, '  [warn] Service::refresh 失败: ' . $e->getMessage());
+                self::log($output, '  [warn] 请修复 runtime/cache、application/extra/addons.php、public/assets/js/addons.js 写权限后重跑 install');
+            }
+        }
         return true;
     }