Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
You have to take this up with the channels that are offering the movie rentals and sales. For the most part they don't own these movies, they only obtain licenses from the actual owners. These licences determine what they can do with these offerings.
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Roku Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X | Roku Streaming Stick 3600