All of a sudden my M2 is deactivated on my site, help please

All of a sudden all of my membership work is gone and the M2 plugin is not activated. I granted support access. I did not just want to reactivate the M2 plugin bc I don't know if it will bring all my settings and users back or not. Why did this happen? Can you fix it so all my users and settings for membership are restored? Thank you!