I just configured the Cloudflare account and planning to use it only for DNS and not for SSL. So I turned the SSL option OFF. When I try to run the GTmetrix test this error shows up:
An error occurred fetching the page: HTTPS error: SSL connect attempt failed error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version
Previously I was using the SSL from Cloudflare and it was working fine.