I have added more specific model numbers below. If you can set these up for download, maybe we can make this work. I'll give it one more shot, otherwise, I'm shipping this back. Brand: Spectrum, Model: 210-H, Product: Cable TV DVR — won't load with all functions. I tried assigning various buttons and functions. Power on/off is not working in any variation. Brand: Sonos Model: S2, Version 14.19, Product: Wifi Sound — loaded and basic device sound functions seem to work, but NOT in activity mode Brand: Samsung, Model: UN65MU650D, Product: TV Monitor — loaded, but power and other functions do not work, will not learn Brand: Apple, Model: MXH02LL/A, Product: Apple TV 4K HDR (streaming device) — seems to work as a device, but will not respond in Activity mode