I am having a heck of a time with a task that should be really easy: tuning my LG 55" OLED television's "Magic Remote" to control the volume on my Denon AVR-S540BT receiver. I am connected to the receiver via the HDMI ARC and the sound is fine. I can also connect via an optical cable and hear clean sound out to my speaker system. From there I did the following:\n\n\nWent to the TV's Device Connect page\nChose Home Theater as the device I wanted to connect\nChose Denon as the brand and found a code that turns the receiver on and off\nSaved out of those screens\n\nBut when I try the volume or mute keys on the remote, nothing happens. This is frustrating to me, and adding to my confusion, the code-finding process has as its test, Power, Input, and and Up (whatever that is). I don't care about turning the receiver on and off or changing its input; all I want to do is control volume!\n\nThis is arguably the most advanced television in the world today -- surely I can accomplish this simple task. Can someone here help me get there?