Get a site unblocked from CloudFlare Family DNS service

We set up a client site with Cloudflare, but this caused a problem with the site SSL note being renewed properly.
We removed the site from Cloudflare, but ever since the CloudFlare Family DNS service has blocked the site.

Any advice on getting a site removed from the CloudFlare Family DNS service block list would be gratefully received.

thanks

You can check its categorization here (scroll down a bit):
https://radar.cloudflare.com/

If it’s incorrect, it will let you submit categorization feedback.