Ive purchased "wildlife savannah" on both my kids Minecraft games and they have the exact same IPads. For some reason when kid 1 goes to open wildlife savannah world it does not launch. It does not happen all the time, maybe 1 out of 10 times will it finally open. And when it does it may even shut the whole game down. There are no issues at all on the standard worlds just the purchased worlds.We have absolutely no issues at all on kid 2s minecraft app.The ipad is up to date and so is the game app. Please help me.