I’ve been using my PS4 controller with the Shield to play some Steam games over gamestream.

I had it working perfectly with Assassins Creed 2 and some other games last night, I went to play again this morning and when connecting the controller to the shield it’s not working. I’ve used Bluetooth to connect the controller but it doesn’t do anything after it’s connected, I can’t navigate menus or play any games with it. Not sure why it suddenly stopped working?