不能访问openart后端

我无法登录到我的openart管理面板，因为当我导航到www.mysite.com/admin时，它被重定向到主页。已禁用.htaccess和php.ini文件。正如你可以从配置文件中看到的，我在一个子域上托管它，也许这可能是问题的原因，我不确定。这是我的config.php

    <?php
    // HTTP
    define('HTTP_SERVER', 'http://inaden.360mustang.com/');
    // HTTPS
    define('HTTPS_SERVER', 'http://inaden.360mustang.com/');
    // DIR
    define('DIR_APPLICATION', '/home/mustang/public_html/inaden/catalog/');
    define('DIR_SYSTEM', '/home/mustang/public_html/inaden/system/');
    define('DIR_LANGUAGE', '/home/mustang/public_html/inaden/catalog/language/');
    define('DIR_TEMPLATE', '/home/mustang/public_html/inaden/catalog/view/theme/');
    define('DIR_CONFIG', '/home/mustang/public_html/inaden/system/config/');
    define('DIR_IMAGE', '/home/mustang/public_html/inaden/image/');
    define('DIR_CACHE', '/home/mustang/public_html/inaden/system/cache/');
    define('DIR_DOWNLOAD', '/home/mustang/public_html/inaden/system/download/');
    define('DIR_UPLOAD', '/home/mustang/public_html/inaden/system/upload/');
    define('DIR_MODIFICATION', '/home/mustang/public_html/inaden/system/modification/');
    define('DIR_LOGS', '/home/mustang/public_html/inaden/system/logs/');
//database details omitted
?>

这里是admin/config.php

<?php
// HTTP
define('HTTP_SERVER', 'http://inaden.360mustang.com/admin/');
define('HTTP_CATALOG', 'http://inaden.360mustang.com/');
// HTTPS
define('HTTPS_SERVER',  'http://inaden.360mustang.com/admin/');
define('HTTPS_CATALOG', 'http://inaden.360mustang.com/');
// DIR
define('DIR_APPLICATION', '/home/mustang/public_html/inaden/admin/');
define('DIR_SYSTEM', '/home/mustang/public_html/inaden/system/');
define('DIR_LANGUAGE', '/home/mustang/public_html/inaden/admin/language/');
define('DIR_TEMPLATE', '/home/mustang/public_html/inaden/admin/view/template/');
define('DIR_CONFIG', '/home/mustang/public_html/inaden/system/config/');
define('DIR_IMAGE', '/home/mustang/public_html/inaden/image/');
define('DIR_CACHE', '/home/mustang/public_html/inaden/system/cache/');
define('DIR_DOWNLOAD', '/home/mustang/public_html/inaden/system/download/');
define('DIR_UPLOAD', '/home/mustang/public_html/inaden/system/upload/');
define('DIR_LOGS', '/home/mustang/public_html/inaden/system/logs/');
define('DIR_MODIFICATION', '/home/mustang/public_html/inaden/system/modification/');
define('DIR_CATALOG', '/home/mustang/public_html/inaden/catalog/');
//database details omitted 
?>