Can't play purchased episodes on the walking dead season 1
I played the walking dead season 1 episode 1 for free on my iPhone 6. I enjoyed it so I purchased the episode bundle for $19.99. I checked my bank account the transaction went through, but I can't play any of the episodes I just purchased. It just wants me to buy them again. I clicked on restore, but it doesn't work. How do I play the episodes I purchased?