I keep getting the message:
"You were denied Enter privileges in Conference Hall."
Ah that maybe because an admin(fuzzy) hasn't registered you yet, probably because he wasn't online when you were there. That is one limitation, he can only register you once you are in the server and after that you can move around as you please.
Also I did not notice you there. Because of the increase in users joining and leaving I did not notice you were trying to join, my laptop only has limited vertical resolution. Next time send a text message to one of the other users by double clicking on one of the names to ask them to drag you in.