Tapping on "Sign In" on iOS and Android instantly quits out of the app

I created a Microsoft account for my daughter so that she could play Minecraft. However, after logging in on her iPhone and iPad using the latest version of Minecraft, the app quits out. I am happy to provide my account name. 

 

Steps: 

1. Launch Minecraft on iPad or iPhone 
2. Tap Sign In 

Expected: 

App doesn't quit 

Actual: 

App launches