I haven't seen any recent posts about this, but it looks like most of the individual channels are not working and they won't rescan. I'm going down the list of channels and it looks like mostly CBSViacom and some TimeWarner channels so far: Comedy Central, MTV, VH1, BET, Paramount, Nick, CNN, TCM, A&E, History, USA, etc. They all have the same error message:
https://sp.auth.adobe.com/adobe-services/authorize": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
I updated the Channels DVR Server to the latest version today: 2022.01.15.1918