We are both in US-East, I created a lobby with my own customized lobby code. I gave my friend the EXACT lobby code. He tried it in the "Join Room", but all that happened was a red bar around the code.
We even tried putting no code in at all, and that didn't work. We even tried restarting the game several times. IDK what's wrong because its not like there's an error, it's just we can't join each other.