@tayy: To begin with, please ensure that your controller has sufficient battery, just in case this is preventing it from working as intended. If it does, head to Settings > Connections > Bluetooth > Tap the cog to the right of your controller > Forget. Toggle Bluetooth off, then on again, place your controller in pairing mode, select it from the list of available devices, and tap on it to complete the connection. If you're still experiencing issues, close the game you're playing via the Recent Apps button, then reopen it to see if this helps.
