Recommendations

A few choices to get right early. None are required, but they save trouble later.

Recommendation	Why it matters	What to do
Back up proton.lock	It is the key that encrypts your auction data, tied to this install. Lose it and the encrypted rows can no longer be read. It is not your licence.	Back up plugins/ProtonAuctions/proton.lock together with your world. See The Installation Key.
Choose your database before going live	Moving from SQLite to a shared database later means migrating real data.	Single server, stay on SQLite. Network, set up a shared MySQL, MariaDB or PostgreSQL database, and Redis, from the start.
Let the engine warm up	The pricing engine learns from your real trades and stays quiet until it has enough.	Leave it on and expect around 24 hours, plus some sales, before /ah suggest returns prices.
Test Currency Autopilot before opening	It checks an unknown economy plugin with a small live deposit and withdrawal.	It is off by default. If you enable Autopilot, confirm a few transactions on a test player first.
Enable Barter if you want item trades	Item-for-item trading is off until you turn it on.	Set barterSettings.enabled: true. See Barter.