I tried going to chaos gotham it kicked me out and said server down for maintenance but I can log into another alt I have just fine
I was there today and had no issues. I would suggest contacting support so they can move your character, it probably got stuck in "bad state" https://help.daybreakgames.com/hc/en-us
I just had my main toon get stuck teleporting to Chaos Gotham as well. Now all I see is the loading screen until I get disconnected from the game after awhile. I sent in a ticket. Hopefully this will get resolved by tomorrow since this is my only high level toon.