Monitor Bug

Everytime when i try to play Beamng, it goes to the 2nd monitor, and i cannot change it back to my main one, I tried Alt+enter and dragging it to my main monitor, but when i re-pres alt+entr, it goes back to my 2nd monitor, i've tried all methods and reinstalled the game, and when i redownloaded it and unplugged my 2nd monitor, it just crashes cuz there is no "Avalible monitor" is there any fix to this?

 

In the Display settings ingame you can set which monitor to use, right next to the resolution setting.