TV app issue on the Apple TV

[PCFan]

I have an Apple TV (4th Gen) and I found an issue with TV complete series that I redeemed from iTunes codes from when using this app. It will show in Up Next row and will say "Continue" with a progress bar for the episode I'm currently watching. However, when I click on the picture of the current episode, it will give me a choice of where I want to watch it, then I choose iTunes, then it takes my to the episode's picture with the rest of the season in iTunes. However, here is the issue, the episode still shows the purchase price and when I click on the episode it gives me and option to purchase. However, I already own the complete series in iTunes. Is this because I redeemed the TV series from a code instead of purchasing directly from the iTunes store? Does this not work for TV shows bought or redeemed as a complete series? For movies I'm currently watching in iTunes, the TV app works fine.