I had 6 gems in my account and clicked to buy some more to finish a level. It looked like the process had been completed successfully, but the gems didn't register and the number stayed at 6. I clicked the purchase button again, thinking something had gone wrong, but I got a message saying "you have made this purchase, but it hasn't been downloaded yet". I shut down the game to see if the change would register, but it didn't. I opened the game again this morning after shutting it down last night and the gem count is still at 6, and furthermore, when I click on the add gems button, I get nothing but a blank screen. The add keys and add coins buttons take me to their menus; its only the gems menu that has disappeared. I know don't know whether I was actually charged for those gems or not-no receipt from Apple yet, but they usually take a couple of days.

What gives?