I just opened SuperNET wallet with a new account and got all the deposit addresses in less than a minute, so the service is working well. Have you tried to log in again? It's probably a simple case of bad timing, since occasionally during this early beta stage one server may be down for a little bit (although my stats give 95%+ uptime for the service) and generating the multisig deposit addresses requires all nodes to be active.

So please try again, you should get your deposit addresses without problem. Right now the only acknowledged issue with the service is that VPN requires a patch from the coin developer for VPN SuperNET withdraws to work - other than that, all is working pretty good.