When playing Medal of Honour Above and Beyond it gets to the bit where you are on the submarine Mission 4 and it glitches at the same point each time and won't let me move forward which is so frustrating.....does anyone know why this is happening and...

I have just bought Down the rabbit hole , to play on my Oculus 2 and its installed and loaded but just wont play when I click play.Anyone know why or what I should do....all our other games play.