u/CK-3030

I'm going on a trip tomorrow and was curious about remote play, so I downloaded Steam Link and connected my Android tablet device to my PC. My library loaded fine but when pressing on my controller to start the game (Battlefront 2015), it would launch but only on my PC and not on the tablet. I tried a different (Jedi Outcast) and it launched but I couldn't control anything whether by the controller or the touchscreen. I went to my PC in a different room after closing down Steam Link and both Battlefront and Outcast were still open and with a wave my mouse I could see that the games were only responding to my PC controls.

Is my problem a simple settings fix? If anyone could help out I'd very much appreciate it.