Canoot connect to xbox live after connecting for the firdt time

When i downloaded the 0.15.0 beta 1 i just connected to my xbox live acoount and it all went good.When came back at night i found it disconnected from xbox live and it doesn't want to connect BTW I'm playing on a samsung galaxy J5
this is so frustrating because i really want to finish all of those achievements
and play with realms whent it does come out with my friends
I hope you have a good day and goodbye