Can no longer sign in to my account.

I updated the app then tried to sign in but I keep getting this message. I have tried restarting the tablet, Using an older version, changing my Microsoft password, uninstalling then reinstalling the app, Downloading the xbox app and even deleting my Minecraft files and I still get this message whenever I try to sign in. Saying it failed to sign in to my Microsoft account. How do I fix this problem?