improved

DigiCert FILE and DNS Auth now supports sub-domains

Updates to the DigiCert validation process mean they now align with Sectigo. FILE and DNS Auth strings should be placed on the relevent sub-domain if the order is for a sub-domain.

If you order for sub.example.com then the FILE or DNS string should be placed on sub.example.com

If your order is for example.com and sub.example.com then the FILE or DNS string can be placed on example.com to validate both.