Domain not apearing in domain list

Those instructions look like CNAME records for SSL certificates (note the _acme-challenge part). Does that mean you were able to add your domain successfully and are now stuck with something else? Or are things getting mixed up here?

Your domain is pointing to our nameservers, so setting up the CNAME button should be as simple as clicking a button in the client area. Is that when you get the error, or are you doing something else?