Can't get Pro Sites site to work

I would like to use Pro Sites and Market Press to build an Etsy style network. I use GoDaddy for my host. Marke Press works great for my primary domain. I think something must have gone wrong when I was setting up the Pro Sites. I’m attempting to use subdomains. I think that was the only option with that host. When I click the link for a site I created through Pro Sites, I get a whitepage with “This website is temporarily unavailable, please try again later.” at the top. Not sure where to start to correct this (WordPress or GoDaddy). I think there may be something missing in the coding. Please help.