Your domain appears to be configured in a partial/CNAME setup from a partner. At the moment neither the root nor www is going through Cloudflare and both pages present with an invalid SSL certificate.
When a domain is in a CNAME setup it typicaly has a record which looks like foo.example.com -> CNAME -> foo.example.com.cdn.cloudflare.net and this is set and managed by the partner. Usually the partner config doesn’t support the root domain out of the box because most DNS providers can’t CNAME at the root of a domain. I would recommend contacting the partner you signed up through.