well i am also facing the same problem now, it was just fine 10 hrs ago , i am able to play classic server but not the Choas , i am able to login successfully but as soon i select the Choas server , it displays Failed to connect to server.
I tried to play in my laptop too as administrator but the results were the same , can't play Choas but i am able to play classic. any idea what might be wrong?
As for Azzy , yes i am able to open the link in chrome on both the systems.