In app purchases fail to play correctly

If you make in app purchases to get more sound effects, only the top 5 will play. As you scroll farther down it just keeps playing the same top 5 or so sounds. You cannot play all the sounds you purchase. On iOS 8.1.3 iPhone 6+. I think this app needs to be updated.

DM2600 about Star Trek™ Communicator, v3.0.2