The system does this when the settings on cloudflare are wrong. If you remove cloudflare, it'll work again. You need to make sure the DNS records in cloudflare match the ones on our name servers exactly. The easiest way to do this, is to go back to our name servers and get the domain working, then let cloudflare copy the correct zones from our servers (they have an option to do this as part of their setup). You can use the cloudflare option in cpanel ("full zone" choice) to help you do this if you want. We can't troubleshoot Cloudflare though since we have no visibility into what their servers are doing.