How do you even play this in Arma 3? Head tracking is locked in Full VR mode. You can only turn the head in cinematic mode but then it’s not really VR anymore. They keyboard is partly locked. Only a few keys work so you can’t open doors, go prone, switch weapons or give commands or anything except running around, shooting and reloading. Arma 3 requires you to have the full keyboard enabled.
I don’t have any of those keyboard issues you spoke of. But I think the default profile has head tracking issues due to the alt key override by vorpx. Enable expert settings in vorpx controls on your actual desktop not in the in game menu. Then turn override alt key off, that should enable head tracking.