I just cancelled YouTubeTV to save $71 per month. I then activated my CNN & NBC News apps to continue accessing CNN & MSNBC. The weird thing is, on my first day with these apps, I could access live feeds on both of these apps ... but then the next day (yesterday) I was unable to! CNN tells me "This video is unavailable right now" (for ALL CNN content, not just live feed) & NBC News scolds "You are not authorized to view this content!" even though hours before I was! Do I just need to bid farewell to CNN & MSNBC or go back to spending nearly $1k per year for those feeds?
For more information about that channel's features and functionality, you'll want to contact the channel provider support directly to inquire further. Many channels on Roku are developed and maintained by the channel provider themselves.