Can't login to Xbox LIVE

I have 0.15.0 build installed via APK and played normally. Once I uninstalled it because stopped playing. Later I reinstalled Build 1 via the same APK and logged in. Some days later I found out I was not logged in and I tapped on Sign In. A white loading screen that says Minecraft Pocket Edition appeared and then a 'Sign In?' error appears. how to fix?