Xfinity streaming- changing channels

We have Samsung and LG TVs but can't change channels using remotes on either. ...

Since they dropped the Mini-Guide from some Stream app devices, to change the Stream app channel on my Samsung TV I have to [Return] [up] to the first Stream screen ("Now Playing"), [select] "Live TV", and then scroll-scroll-scroll to the channel I want to watch. "Saved", "Browse", "Search", and "Settings" are also options on that screen.

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Greetings, @user_jos6v3! Thanks for taking the time out of your day to reach out about changing channels on the Xfinity Stream app using your TVs. @BruceW provided some very helpful steps. If you try to change the channels that way are you able to, or it still does not work?