Wild-card SSL not working for cPanel/WHM

Issue :

A wild-card SSL (*.server.tld) works for the server hostname (https://hostname.server.tld) but does NOT work for cPanel/WHM (https://hostname.server.tld:2083)

Fix :

- Go to WHM >> Service Configuration >> Manage Service SSL Certificates
- Install the certificate for each of the services.

This should resolve the issue.