Sites not loading?

Hey everyone,

Running into a strange problem that I would love some feedback on. Here’s the gist of it. We are currently hosting our website (moneythink.org) with JustHost. A few days ago, due to an unrelated problem, tech support had to to make moneythink.org the primary domain on our account (there are other domains that point to our account).

Ever since then, however, NONE of our sub-domains are loading. When I go to https://www.moneythink.org/wp-admin/network, I see that we currently have 20 sites (sub-domains) created, but when I try to access them, I just get a Page Not Found browser error (e.g. https://uchicago.moneythink.org)

Any ideas at all as to how I can begin to diagnose the problem? Is there anything maybe within my cPanel that I should check?

Thanks in advance for your help.