Firstly, thank you for a superb piece of software.
I just wondered what the purpose of the "Start DXlab Commander Suite Server" item was?
I've currently got RUMlogNG making a serial CAT connection to my FT-857D and then WSJT-X is set to use the DXlab connection. I assumed I'd need to configure start server but even without it enabled it all seems to work.
DXlab server
Re: DXlab server
There are multiple option available, pending on your setup: https://dl2rum.de/RUMlogNG/docs/en/pages/DXLab.html
73 and best dx de Tom, DL2RUM