Multisite, New Site Problems - URL For new user is not responding

Hi,
I don't know what needs to be done on my hosting side in order to populate more stores, I have created a site manually through my dashboard called "test.puffartist.com" and when the user gets the email he logs in but says he does not have the right credentials to login, and if you try to manually go to the site, it says the link is dead. I contacted HOSTGATOR and told them about this, they set up a "*" (Astirek) in my subdomains section, I really need some help to get the ball rolling, thanks!