Q: I downloaded the 3rd episode of Downton Abby but cannot find any of season 4 downloads when I open the video app.  Where did they go?

I've purchased the new season 4 of Downton Abby and downloaded the ones available, but when I go to the video app they are not there.  Seasons 1, 2, and 3 are there.  One is marked season 4 but when I open it, only seasons 1, 2, and 3 are there.  What can I do?