How to update your Palworld server
Palworld, along with all other Steam games, does not update automatically on the server end like the client-side game on your computer.
Therefore, you need to launch a Steam updater in the control panel. Navigate to your server and look for the following icon: Server Updater (SteamCMD)
Click it and a new tab will open. The updater will run for about a minute or two. After, your server will have the latest files and you should be able to connect. Any errors that appear during the process should be reported to the support team.