my son uses minecraft on his ipad. Has alot of world. All of a sudden all of those worlds are gone. When I go to storage on the ipad I see the size of the game is 4 gigs, the worlds are still there they just wont show up when you go into the game to play. Any suggestions, he is using 1.16. I did offload the all and reinstalled. Same result. No worlds. Please help!