Error 1014 cname cross-user banned cloudflare support

getting error 1014 cname cross-user banned because im using CNAME record pointed to another subdomain hosted on Cloudflare with different account, because there is no live support so i need to post it here for Cloudflare to allow me to point my subdomain to another subdomain
let me know so i can provide my subdomain and the other subdomain

The two domains must be in the same account. CNAME pointing to a domain in another Cloudflare account is not allowed for security reasons.