I purchased the bundle for pathfinder. Everything seemed to be showing up except the C deck.
This is the steps that I did to get it to working.
I closed all apps running on my iPad.
Opened Game Center and then closed it.
Reset the iPad with the home button and power Barron held down.
Once it restarted I opened Game Center.
I then opened up the pathfinder game and all my bundle purchases were showing including deck C.