To make some changes to your server, you should try going to the Files page of your control panel, copying the parameters from the DefaultPalworldSettings.ini file in the main directory, then continuing to the directory below and entering the parameters there.

/Pal/Saved/Config/LinuxServer/PalWorldSettings.ini

Meanwhile, make sure your server is turned off and run it when your edits are finished.

You can also set your passwords on the Startup page of your control panel.

Also, you should remember this: If, despite editing the parameters, some things still do not work on your server; You can talk about this with other clients and mods by coming to our Discord server. Since the game is still in early access, there are many known issues. Things such as the server crashing on its own after a while (Memory leak) or password problems are known to the developer. And the game developer made many comments about these on discord.

https://discord.gg/gameteam