Well, it was when I went into Minecraft one day and then it said I needed to re sign into my Xbox account. Then, it just froze and glitches out of the app. I tried deleting the app and re downloading it again. But that didn't help at all.

I was just going to play minecraft, when I had to re-sign into my Microsoft/Xbox account.  Then, when I tried to sign in, my iPad just froze and quit the app.  I deleted the app and re downloaded it again, but it didn't nothing but delete my worlds.  Any idea how to fix this?