Many leaked servers have hidden GM commands. Try typing in chat (as admin account):
Beginner's guide to setting up a VPS (Virtual Private Server) | Blog galaxy online 2 private server install
Execute/Import the .sql files provided in your server pack into these databases. Update the user table to create your admin account. 2. Configure Server Files Many leaked servers have hidden GM commands
If you are trying to host a private instance for your own use, you typically need a or a dedicated Virtual Machine (VM) . galaxy online 2 private server install