If your site shows a "Site Currently Unavailable" message, don’t worry. Start...

https://penelopessmartdigests.talesignal.com/posts/site-currently-unavailable-how-to-set-up-backups-so-restore-is-easy

If your site shows a "Site Currently Unavailable" message, don’t worry. Start by checking your DNS settings to ensure your domain points correctly. Make sure file permissions aren’t causing a 403 error