(please specify the URL of the site on which you are experiencing the problem)
Error Message
We did not detect any nameservers on your domain name.
Please make sure that your domain name is active and set up correctly with the provider of the domain name.
Welcome back to the forum! You might have to wait a while for you to be able to get the CNAME record installed automatically or, if you already had the record (which you do), for you to be able to request the certificate. In the meantime, you can try refreshing the order page.
There was an issue with DNS lookups from the client area. That should be working again now, although I cannot guarantee that it won’t break again soon.