@ValeriaCab: Are you certain that the issue is stemming from the activation of the Emergency sharing feature? If you head to Settings > Safety and emergency > Emergency sharing, can you see an option at the bottom of the screen to 'Stop Emergency sharing', or something similar.
You may wish to try heading to Settings > Apps > Tap the 3 lines to the right of 'Your apps' > Show system apps (toggle this on) > OK > Emergency sharing > Force stop, to see if this helps. Also, disable 'Location' in the Permissions settings, as this would require a network connection, and might limit your ability to toggle on Flight mode.
