Facing a “Site Currently Unavailable” message? Don’t worry—you can fix it....
https://penelopessmartdigests.talesignal.com/posts/site-currently-unavailable-wp-admin-works-but-homepage-does-not-troubleshooting-guide
Facing a “Site Currently Unavailable” message? Don’t worry—you can fix it. First, check your site’s DNS settings to ensure they point correctly. Also, verify folder permissions aren’t causing a 403 error