Firstly download the appalling software for the mac. It is so unintuitive I think they employed people who get paid per button and confirm dialogue.
Second thing is to email them via their support email channel. The device does not natively support the long pauses (it interprets it as multiple presses) on apple tv
This will actually put the device into your list. Just a case really of assigning the buttons you wish to do the actions, I have the up down left and right, and ok doing the obvious and all the coloured buttons for 'back'
The software is cack, so you have a few hours work on your hands to get ir right.
Have you managed to get the FF/REW buttons working properly? On my 880, if you keep pressing them, they just interpret it as multiple presses, and if you press it once, they FF/REW for a few seconds only...