- Log into the LOW.MS Control Panel
- Go to your ARK server.
- Check your server is up-to-date by clicking the Steam Update icon.
- Click the Commandline Manager icon.
- Unless you are using a custom commandline, re-select your currently select commandline (if you are not sure which, just select the first one)
- Change the map name from TheIsland to Ragnarok.
- Click Save.
- Restart/Start up your server and enjoy! (Make sure you have locally installed the DLC too!)