I bought the Inteset IReTV USB IR Receiver & USB Y Cable with The Inteset INT422 & Harmony Remotes thingy, and I'm using the Xbox 360 codes on my MX-990, but nothing works when I press the buttons my remote.

I even have the MRF 350/MRF-260 sensor on the Inteset IR receiver and when I press a button on my remote, the blue light comes on the Inteset IR receiver. In fact, both sensors light up, but the remote is not controlling any functions for the Firestick. I have a Firestick 4K Max. Can someone please help?

Thank you in advance for your assistance.