About a year ago, I downloaded X-Plane 10 for iOS and bought the "all planes" DLC package. Today, I re-downloaded the game to my iPhone and iPad and attempted to restore my purchase, but the "restore purchases" button in the app settings does nothing when I press it, and all of the paid planes are still locked. I am signed into the same Apple ID I used to make the purchase, and I have tried restarting the app as well as my devices. I am running X-Plane 10.5.0 on iOS 10.3.2.