A test authorization for cpanel2.gpdhost.com to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://cpanel2.gpdhost.com/.well-known/acme-challenge/eLbZFeD7n5YGTJOYcwIfP55STZoiLQAGNVbr2NWReDs: Timeout during connect (likely firewall problem)