So I was able to get it to work up until I had to press Enter to play, at which it just kept telling me I couldn't sign in Xbox Live. Is this just a problem with the Game Pass Edition?
that was probably because xbox live was down.
to get achievements to pop like normal during gameplay, just turn your internet back on after the game has started. worked fine for me until xbox live went down again for like the third or fourth time in two weeks.
Can you not just close the game with the launcher like you're supposed to and then go back into the game as you would normally? I've not used a trainer on the Windows Store games with EAC before so I have no idea how you'd usually do it.