Hi Chrisla.
Sorry you had trouble with the Crit Circle. And sorry I didn't see this note until just now.
I don't know what the +x mode change is all about, but the connect key is the password. Did you forget it? It is "birolsangels"
The precise method for getting into the channel depends on what chat client you use. But let's say you get into StarChat.net, and find your way into the main #AbsoluteWrite chat room. To move to #AWCritCircle, then, you type this:
/join #AWCritCircle birolsangels
You must type the command exactly as it appears here (although the capital letters aren't absolutely required).