Will AutoSSL cover service subdomains of alias domains?
AutoSSL will not cover service subdomains of an alias domain. The ServerAlias entries for service subdomains are not added to the Apache VirtualHost Configurations for domains added to cPanel as an alias. This is to avoid a high number of ServerAlias entries requiring valid SSL certificates in Apache.
If you would like AutoSSL to cover an alias domain's service subdomains, you will need to remove the domain as an alias then add the domain as an Addon domain.
Once complete, you can manually run AutoSSL by following our article on Manual AutoSSL-Certificate Renewal.