Purchased movie extras not playable

I have quite a few purchased movies on xfinity that have Extras included with Purchase. They used to play just fine. However, now, regardless of the movie or extra, after pressing the Watch button, a screen pops up. This screen confusingly says Subscribe to This Requires a Subscription - to watch this program you'll need to subscribe to this channel.

Now, first of all, this is purchased content. Second, these "channels" are unable to be subscribed to since the are just studios... ie WB and Universal, etc. and not channels. Third, this feature worked in the past.

Enhanced movie features work fine since this is through the internet and not strictly On-demand. I really would like to view my movie extras again. This appears to be am unintelligible error without an error code. I am at a loss. Thanks for anyone for help.