ZThe site is probably just offline, but you're seeing a cached version on your phone.
Cwell, at least it makes more logical sense now. You've just gotta fix the root issue: https://community.cloudflare.com/t/community-tip-fixing-error-521-web-server-is-down/42461
Investigate what's wrong with your web server
Investigate what's wrong with your web server
Cloudflare Community
Error Try the suggestions in this Community Tip to help you fix Error 521: Web server is down. Background A 521 error happens when we are unable to make a TCP connection to your origin server. Specifically, Cloudflare tried to connect to your origin server on port 80 or 443, but received a connection refused error. This is often caused by sec...
Cyea, sounds like you have a problem with your origin web server. If it's shared host, bring it up with them. If it's a self-hosted server/vps, check if you can reach it via ssh/etc
Cthat's a good first step, then you should check web server logs/status when it's down and see if you can find anything
Cwhatever your webserver is
Cif kuma fetching a cached endpoint? If so, probably why it thinks its online
