How to Set the Server Owner on Your Astroneer Server
The server owner determines which Steam account receives administrator rights on the server. You need to enter both the Steam display name and the Steam64 ID.
Open dashboard
Open the dashboard of your server.Open settings
Navigate to the Settings.Enter Server Owner Name
Enter the Steam display name of the owner in the Server Owner Name field.Enter Server Owner GUID
Enter the owner's SteamID64 in the Server Owner GUID field.Restart the server
Save the settings and restart your server.
Note
Admin rights are assigned to the first person who connects with the specified name.