Using Fire HD8 and Fire Kids HD8

When we click Sign In for Free or go to the Sign In on the opening Minecraft screen, it loads and loads and loads, then says "We tried to sign you in to your Microsoft Account, but something went wrong"

Has been doing this for 3 days. Have tried on all 3 of my kids tablets. Can login to Microsoft Accounts in every app I've tried and online, just not on Minecraft.

Tried installing Xbox app, that allows me to login, but when I go back to Minecraft I get the same error. Also tried uninstalling and reinstalling app, as well as Force Close and Clear Cache.

**Just upgraded to 1.16.200 on December 8, 2020. STILL NOT WORKING!!!!!**

***Upgraded to 1.16.201 on December 20, 2020, STILL NOT WORKING ***