@WebHostPro - if you're not getting the hostname cert issues, you can put in a ticket to our team and we'll see if we can get that issued on our end.
@Wallu - if you don't plan to use the service subdomains, you can disable them in WHM - Service and Proxy Subdomains | cPanel & WHM Documentation
@Wallu - if you don't plan to use the service subdomains, you can disable them in WHM - Service and Proxy Subdomains | cPanel & WHM Documentation