I have purchased two modules (P51D and A10-C) after following the instructions to activate these I find this. When starting the game a windows pops up with two codes that I'm supposed to enter when the has started. I copied them to the clipboard. After the game now has started I see the A10-C available, but not the P51D. I have tried copy only the P51D code to the clipboard and trying to activate it again at Steam. Still P51D remains unavailable to me in the game ?