why can’t my domain be accessed the description is 522 connection time out, I have read the article but I don’t understand it
A 522 error is a timeout connection between cloudflare and your origin server.
As the article suggests in some cases can be a blockage on the IP ranges from cloudflare on your origin and adding this iptables to a file named .htaccess sometimes solve the issue.
The best in my opinion for you first is try to filter your traffic analytics for edge status = 522 and then you will have reference of URL, IP and path where the main issue occurs this might be good information to provide to your hosting provider.
If you still don’t understand something don’t hesitate on let know.