If you login with the username "admin" and the password you entered when the server asked you to on it's first boot then you have godmode and invisibility Invisibility will stop zombies from seeing you, and make you really fast Godmode will stop some of your character stats from changing, including but not limited to pain, weight, hunger, thirst etc Either login as a non admin account or open the player list and click the godmode & invisible buttons that appear when you hover over your name, every time you login