How to start the DLC Isle of Siptah
Rent your own Conan Exiles server at 4Netplayers.com
Edit the Engine.ini via the web interface and enter the following under the line
[/Script/EngineSettings.GameMapsSettings]
ServerDefaultMap=/Game/DLC_EXT/DLC_Siptah/Maps/DLC_Isle_of_Siptah