The only way I can reliably watch Live TV is on my computer.
Roku App: Frequently stops with malformed data. Works fairly well with recorded shows, but using fast forward can cause freezing.
Media Player on my Sony BluRay Player: Frequently freezes, requiring unplugging player. Media Players can ...

Working now. Same UI version. Strange.

The new version of the UI (20250327) on iOS is unable to play Recorded content. All I get is a “Data not found” message with a “Go Back” button.

My experiment to replace my Roku Premiere with a Roku Ultra did succeed in getting the HDHR app on Roku to permit sound, but the experiment is basically a failure due to the numerous bugs in the app.
Watching live TV works for a bit, then stops. Sometimes there is an on screen message about ...

I replaced my Roku Premiere with the NO SOUND problem with a Roku 4850X Ultra which fixed that problem but added new ones.
If I try to skip forward while watching a pre-recorded show the screen often just goes blank and the app hangs. Worse, if I back out of watching and try again, I am taken back ...