@Vern45-
For any channel app that requires authentication of your cable account, go into the app, find the way to log or sign out of your old tv provider account, then sign back in with the credentials from your new cable account.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Ultra 4850 | Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X
