This happened to me as well. It’s apart of the Apple TV problem in my case. YouTube TV wouldn’t work at all & other apps had problems as well, like Netflix as you mentioned.
Add your device as an IR remote instead & it will work. The only problem is that I had to remount my Apple TV because I had it hidden behind my TV. That’s kind of annoying because that’s why I bought this remote, so it could control it over the internet & be out of sight.