Game Instance problem 4.15

Hi, I haven’t done any VR work with the Vive. The past Month I have been doing backend login server for my blueprint only multiplayer game, and so far to I have been using the desktop to get it working. Now I am moving it to VR but because I have changed the Game Instance, It won’t play on HMD. I did a test on a new third person template to see where the problem is. And from that test its the Game Instance. If I use the standard game instance in the third person template it plays direct to HMD. But If I change the Game Instance it only plays on desktop. In the blueprint Game Instance do I need to create a function to enable the HMD, I thought it was auto enabled via the player camera.