Node.js/TypeScript Backend Developer — Fix Bugs & Improve Reliability for App

I have an existing Node.js/Express/TypeScript backend (MongoDB database, Socket.io for real-time updates) that powers an Android app and a React staff dashboard for an in-person activity venue. The system tracks groups progressing through a multi-stage activity, station by station, using NFC wristbands and tablet kiosks at each station. The app is functional but has a few bugs and reliability issues I need fixed: A group/session is disappearing entirely from the active sessions list after only the first station is completed, even though the activity has multiple stages. I suspect the session is being marked "completed" prematurely, but need a developer to properly trace and fix the root cause. The backend doesn't restart automatically after a server reboot (PM2 isn't configured to persist/auto-start), which caused full downtime recently until manually restarted. Needs a proper fix (PM2 startup script, systemd service, or equivalent) so this can't happen again. The mapping between physical tablet devices and which station they represent is currently hardcoded in a source file as a static object, which means adding/relocating a tablet requires a code change and full redeploy. I'd like this moved into the database with an admin-manageable interface (or at minimum, a clean documented process) so non-technical staff can update it themselves. A session "reset" API endpoint currently has no authentication on it at all — this needs to be secured. General review: I'd appreciate a quick audit of error handling and logging so that when something breaks, a non-technical staff member (me) can actually tell what's wrong without needing developer help every time.