How do you backup on an iPad?
I have got the same issue, I’ve tried restarting my iPad both normally and with home bottom+off. Nothing new. It all started after the latest update was installed (1.14.60). I don’t get the login. I only get the Mojang logo up before it crashes.
Thank you Tyler Davis:
Doing what you wrote helped. I duplicated the files and reinstalled the app. Now it's working again!