I would wait a few hours or a few days so maybe, they just had a technical problem that made them shut down their servers for a while but for now, you could wait and hope, its not over for them cause if they were closing, why would they not notify they were about to close in the first place? But sites that go down temporarily usually have an excuse saying, "site temporarily closed" or "guru meditation" but what we see in that site now is "server not found". That made the suspicion that they are now closed higher.
