RC71 Won't Program RF on HR44/500 - DirecTV

My RC71 was working just fine last night, but I woke up today and it seems to have reverted to IR mode and my TV and soundbar programming is gone. I have followed the instructions on the setting screen to reset the remote and to program the remote to RF. The remote does all of the green/red flashing the instructions talk about, but nothing seems to stick. I have tried holding down MUTE and ENTER at the same time as others have suggested. Instead of "applying IR/RF" it says "TV Keys Aren't Programmed." I select the option to program remote and I end up where I started trying to prgram RF. There are no options anywhere for my to program a TV or any other device.

This question, "RC71 Won't Program RF on HR44/500," is about DirecTV channels, programming, equipment, and sports.