Failed: DNS error: host unknown

Well, if the link you used here is the naked domain, then that resolves fine and you will need to contact Google for details, as that is not a Cloudflare issue.

DNS Checker - DNS Check Propagation Tool

As far as Cloudflare is concerned, you seem to have an insecure encryption mode selected and no certificate on your server. You need to fix that as your site is currently insecure with no encryption.