If your doing single dongle mode, you launch 1 bat file for the tuner to use the dongle and its tcp port should be 20001.
View attachment 152721
When you launch the second bat file to open DSDPlus, it will have the matching tcp port of 20001.
View attachment 152722
I renamed my batch files as I have created many of them for different things
I believe you want to launch Fmp24-cc.bat followed by 1R.bat