Error Authorising User (domain abc.def) - Ezoic error

I was signing up for ezoic (ad network) and I am getting this message while integrating it with Cloudflare,
“Error Authorizing User: Failed to setup cloudflare for domain abc.def: SetZone error Unfortunately, you cannot add that domain (” abc.def “)”

Can someone please help me, what should I do?

A post was merged into an existing topic: Ezoic Cloudflare integration not working