The setting that allows you to teleport with resources is a bit confusing, it seems almost backwards with the wording. However, the switch is quite simple.
- Stop the server.
- Click "Configuration Files" in the Gamepanel.
- Click "Text Editor" next to "ServerGameSettings.json"
- Find the line `"TeleportBoundItems": true,"`
- Change true to false. (`"TeleportBoundItems": false,"`)
- Save the file.
- Start the server.
That should be it. You should now be able to teleport with your items.