Some people are having trouble connecting to their websites. Some possibilities.
First, the main culprit is not verifying your domain. The site will not work from anywhere. You have to click on a link in an email from Reclaim. To resend the email, log in to Reclaim (don't go to cPanel), and see if there's a yellow warning on the screen about verifying. (There may be a warning about PHP—you can ignore that one.)
If you don't verify, your site will work for a couple of weeks, then stop. This looks like a wifi network problem, but isn't.
Second, the wifi in the dorms is a different network from the rest of campus. It blocks many things. The solution is to use Grizznet somewhere else on campus.
Third, you may be using the wrong Grizznet. There are several wifi networks, like Grizznet Secure, Grizznet Guest, and plain Grizznet. Grizznet Secure will (probably) block stuff, maybe including your site. Grizznet Guest will access sites, but not use FTP. Use plain old Grizznet.
You should check which wifi net you are using. In Windows, click on the wifi symbol on the right of the taskbar at the bottom of the screen. (On a Mac, there's something similar. Look for the wifi icon.) Disconnect from everything except plain old Grizznet.
Fourth, for one student, Reclaim hadn't connected up the domain he bought correctly. The symptom is that, when you login to Reclaim (don't go to cPanel) the number of domains you have is zero. You need to contact Reclaim tech support for this.
If you still can't get it to work, let's talk.