Seemingly after what seemed to be a BI server crash "502 Bad Gateway" on Jul 21st, I cannot have people join or see my privately hosted game. I am in a clan that privately plays coop and I am the host/mission maker so this ruins my and our Arma experience.
This broke before when Gamespy was removed, but forwarding ports solved it. Now, I am out of options as the ports are still open but it does not work.