Subdomain Not Working After Signup

Hi,

So I am running the ProSite plugin. When I go through the process to test or create a new site through the dashboard or the signup page, the site isn't live.

After i get a confirmation that I am all signed up and when i try to go to subdomain.mydomain.com i get a blank page in my browsers.

Is there a setting I am missing in Prosites? I am not sure why i don't get a website when I test.

Michael