All channels. When realize that there are no captions, I go to Roku settings/accessibility, and closed captions is set to Off. I set it to Always On. I have done this 6-8 times in the last 2 months.
Last night, movies on all channels were blank (dark screen) when we tried to watch. I did a system restart and the movies were visible, but there were no captions. I went to settings/accessibility and cc were Off again.
This is on a Roku Express purchased in October 2022 through Amazon.