Minecraft pe will not load

I have been playing Minecraft pe for over two years now and it has become one of my most favorite games. I recently created a Xbox live account to be able to play on servers. Everything seemed fine until yesterday. Apple came out with a new version of iOS and I updated my device. Now, I can’t load the game, the screen that says Minecraft after mojang goes to the last three or four bars then freezes. Nothing else happens. If I go to airplane mode I can launch the game but shortly after that it will crash. Does anyone know what’s wrong?