[Support Guide] What problems could occur when using Cloudflare in front of Netlify?

Hi everyone, I am also having a 522 connection timeout on getaiblogarticles.com. Weirdly enough, it was working until yesterday around 5PM (no changes from my side). I have removed the Proxied option in Cloudflare, but still have the same 522.

No sign of DDoS from what I see in Cloudflare:

Do you have any idea on what might be happening? The server and frontend deployments show no errors, it seems to be something between Cloudflare and Netlify.