If you still have an iCloud backup you can use. I was able to downgrade the APP by doing a reset of the phone and then restoring from the last backup. Just make sure you use a backup from before you updated the APP.
I get the Mojang logo then a white screen and then crashes. iPhone 5C model MF152J/A
iOS 10.3.3
If you still have an iCloud backup you can use. I was able to downgrade the APP by doing a reset of the phone and then restoring from the last backup. Just make sure you use a backup from before you updated the APP.