Seeing a 'Site Currently Unavailable' message can feel alarming, but you can...

https://rowansnewwords.tearosediner.net/site-currently-unavailable-after-enabling-cloudflare-troubleshooting-guide

Seeing a 'Site Currently Unavailable' message can feel alarming, but you can fix it. Start by checking your site's permissions—incorrect 403 settings often cause this error. If that doesn't help, contact your hosting provider for support