I am a new user, so maybe the answer is give it time. I am trying to use an add-on domain registered through GoDaddy and pointed the nameservers here as instructed. The site worked for a couple hours yesterday afternoon, but now all I get is "This page can't be displayed." Is there a way to know if the server is down or is there something more I need to do? The main domain, which shares the same root directory, comes up just fine.