I have a 3rd gen (new) Firestick set up as device XBOX 360 under "Play a Game" activity in my Harmony 900 setup. Most buttons work, but the Harmony will not power on the Firestick, and neither the Exit (Back) nor the Menu buttons will work. Please advise how to get these three buttons working for my Harmony remote to fully control the Firestick.

(Sorry, I see I posted this in the wrong sub-forum, reposting in the correct one)