I have tried it step by step as your introduction. So at the first time, after the login interface, the game guard stop me.
But i found the automaton keeping openning(that is autoaim, autofire etc. some functions is on), so i close all of them, then at this second time, i can join in the game formally. However, i press END but it stops me while i am in fighting.
Here, i am curious, if there have the other button that can instead END, so we can pass the game guard by using another button?????