When I add my oath key, it won't connect. Any tips or ideas why?

title

When using a controller 1) Launch from Steam 2) Sit idle in game 3) Game switches to intro cinematic and mouse cursor displays 4) Hit A on controller like it says, mouse cursor remains in game while playing with controller

I'm unsure where grades "S" and "U" are relative to "A", "B", or "C". Is this a British grading system or something?

Even with only one player, one controller, a player 2 is added. You can't even do the first mission unless you remove Player 2 via the menu