If your site shows a 'Site Currently Unavailable' message, don't worry. First,...

https://wiki-club.win/index.php/Site_Currently_Unavailable_After_Installing_an_SSL_Certificate:_What_to_Do_Next

If your site shows a 'Site Currently Unavailable' message, don't worry. First, check if DNS settings are correct to ensure your domain points to the right server. Next, review file permissions, as incorrect 403 settings can block access