I'm trying to add Youtube TV as a source and it fails. It can't authenticate NBC. I am aware people are having problems with NBC however shouldn't Channels skip NBC and complete the Add process so I can use Channels for the channels that do work?
With regard to NBC, I went to their website as suggested and signed in with my Youtube TV creditienals. I retried adding the Source and got the same error.
I also have 2FA turned off for the Google account being used by YouTube TV.