The reply from @sdayman is correct if you want to remove Cloudflare from your site. Contact your domain registrar and have them change the nameservers. After that, on the overview page of your Cloudflare dashboard, you can select the remove option in the lower right.
On your site, I see an error `NET::ERR_CERT_COMMON_NAME_INVALID.
When connecting to an address where the hostname and the name on the certificate do not match, you’ll see “NET::ERR_CERT_COMMON_NAME_INVALID”.
Check if the apex of your zone is currently grey-clouded, if you have a subdomain or hostname that serves HTTP/HTTPS traffic, orange-cloud this DNS record to take advantage of Cloudflare security and performance features. To orange cloud that record, click to make it .
Other successful troubleshooting suggestions can be found in this Community Tip. Let us know if you continue to see issues after trying the first four Quick Fix Ideas in the Community Tip, we’re happy to help further.