DirectAdmin has updated its SSL page; because we use a clustered nameserver setup, the system fails to correctly detect that you are using our nameservers.
If you are not using our nameservers, you must manually uncheck "Prefer wildcard certificates" in the ACME settings to proceed with SSL generation.

FAQ:
1. If you are using CloudFlare, you must disable proxying (switch to "DNS only" mode) to successfully generate the SSL certificate.
