Login to the Kinetic Panel
Stop your server.
Go to the File Manager in the side bar.
Open the data folder.
Open the serverconfig.json file.
Locate the AdvertiseServer parameter.
Replace the 'false' value with 'true'.
Click Save at the top of the page.
Start your server back up.
Vintage Story guide
How to publicly list your Vintage Story server
Following this guide will allow your Vintage Story server to be publicly joinable.