I'm sorry for being late but I FOUND THE CAUSE OF THE ISSUE! its because you bought in a minecraft bundle that came with the game or you bought it from outside of the marketplace. so basically that bundle only gives it to you in that version but for some reason the game thinks you technically don't own it! unfortunately the bypass to this bug is to buy it on again on another device on the marketplace. and perhaps the reason it happened on your iPad is because you might've bought it before the marketplace came into existence as that was a direct purchase and not with mine coins.
I'm sorry for being late but I FOUND THE CAUSE OF THE ISSUE! its because you bought in a minecraft bundle that came with the game or you bought it from outside of the marketplace. so basically that bundle only gives it to you in that version but for some reason the game thinks you technically don't own it! unfortunately the bypass to this bug is to buy it on again on another device on the marketplace. and perhaps the reason it happened on your iPad is because you might've bought it before the marketplace came into existence as that was a direct purchase and not with mine coins.