You can easily change the admin password from the Game Panel.
The admin password is generated automatically for each server. You can check the current value by opening the bestnet folder under Files in the game panel and reading admin_password.txt. To use a value of your own, enter it in the [ADMIN] Admin Password field on the Startup tab (letters, digits, – and _ only). The value you enter takes priority.
5. Server Restart
Navigate to the Console tab in the Game Panel and ‘Restart’ the server.
If you have any other questions, please submit a ticket.