We appreciate your first post here in the Roku Community, @Pappy001!
Thanks for informing us about the playback issues you encountered with the Cinema Box app on your Roku. We are glad to provide troubleshooting steps to help you get back on streaming.
Since you've mentioned removing and reinstalling this app, have you also tried rebooting (Settings > System > Power (skip if unavailable) > System restart) your device in between these steps?
We need to make sure that the steps of removing, rebooting, and reinstalling have been followed precisely for the procedure to work.
This ensures that any residual data from the previous installation is cleared, giving the new installation a fresh start.
For further information about this, you may check this Support article dedicated to this: How to resolve a channel playback issue
Keep us posted on how it goes!
Warm regards,
Carly
Carly Y.
Roku Community Moderator