Some domains are not eligible for the Universal SSL if they have any conflicts with trademarked domains or keywords as part of the domain name.
If this is the case, you can upload your own certificate on the Business or Enterprise plans.
For all paid plans and Dedicated Certificates, we have a defined process for brand check vetting. If you would like to attempt requesting a certificate with our other partners.
More info on SSL at Cloudflare can be found in our FAQ.