If you need to reconnect your controller to the game and the QR did not automatically appear, here are the steps to bring it back: 

• If you are playing on T.V.:
  • In your remote, hit the back button
  • Choose menu
  • Choose controller
  • This will trigger the controller connection flow.
• If you are playing on Netflix.com:
  • Press shift+tab
  • Choose controller
  • The QR code will appear and you can redo the connection flow
  • These steps apply to both Windows and Mac operating systems.