Set Accessible Host

The reason why you need to do that is that you do not see a list of available add-ons, themes for some plugin or the license key is not activating.

The recommended way to add a domain to the WP_ACCESSIBLE_HOSTS is within the wp-config.php. This file can be found in the root directory of your WordPress installation. The easiest way to do this is to use an FTP client to log into your server or access your host’s file management system.

Search the file for WP_ACCESSIBLE_HOSTS. If it is not found, add the following line to the end of the file:

if( !defined( ‘WP_ACCESSIBLE_HOSTS’ ) ) { define(‘WP_ACCESSIBLE_HOSTS’, ‘*’); }

If WP_ACCESSIBLE_HOSTS is found, add * to the end of the list. It will look something like this:

define('WP_ACCESSIBLE_HOSTS', ',*');

Save the changes to the server and refresh the admin section.