Hi, FEBoston
Thanks for posting here in the Roku Community.
We understand your concern regarding intermittent captions for some content with Prime Video, and we're here to refer you to the right support to address the issue. As we reviewed your post, the issue with the captions in each language is directly managed by the channel provider, Prime Video.
It would be best to continue working with Prime Video's support and bringing this to their attention. Once their team acknowledges your concern, they can provide you with a workaround or create an update with their app to resolve the issue.
For more information, you can contact them at Amazon Customer Service: Help & Contact Us
We hope you find this information useful, and feel free to let us know if you have further concerns or inquiries.
Thanks,
Kash
