kicking me out when trying to join world

I can open Minecraft to the home screen, where you can select your skins, the worlds, etc. As soon as I click on a world to join or even creating new world, I am kicked back out of Minecraft to my iPad home screen. I have tried to uninstall everything, restore my iPad to factory settings, etc. but it is still happening even after I have re-downloaded Minecraft. My other iPads aren't having this problem as of yet.