Some episodes won’t load on Roku TV?

There are a few episodes of Army Wives season 2 that will not load in the AppleTV app. I’ve tried removing and reinstalling the app, my Roku is up to date, everything. It just says video could not be loaded, check my internet. I can watch the episodes just fine using iTunes, but… why not on my Roku TV? What is causing this issue with only these few episodes?