My website has a 522 error
I'd be happy to try and point you in the right direction. This error typically occurs because Cloudflare isn't able to establish a TCP connection to your Linode and the request eventually times out.
You'll first want to make sure that your Linode is powered on and accepting HTTP requests. You'll also want to verify that the DNS settings for your website are set correctly in your Cloudflare account.
I was able to find some resources from Cloudflare's website that might help you troubleshoot this error:
I hope that this is helpful for you. If you're still running into issues after reviewing these guides, please feel free to reply to this post and we'd be happy to troubleshoot this even further with you. Have a great day!
Linode Support Team