If you disconnect "improperly" the server may think you're still in game. Check the web site, (players list) if your name is is in green, then the server has you in game. Wait 5-15 minutes and check again. When it turns blue, then you can login again.
Hey Oxy (old-timers will know), I remember you from the stream! Hummm is correct here. If you still can not sign in, please e-mail me at the address listed on the support page.
Hummm
Firefly
Grizzalf