When Using the All in One WP Security Plugin, WordPress- after login wp-admin says “not available”
This normally happens when you moved the site to another directory / htaccess file error
The easiest way to disable the plugin is to log in to your server using FTP / cpanel file manager and rename this plugin’s folder temporarily.
Tampering with the DB can lead to issues if you make a mistake.
Ht-access errors, please see this URL to restore htaccess file