To shut down the independent JTDX, first turn on n1mm, then start JTDX from n1mm. Otherwise, it will conflict with the independent JTDX port.
However, this would create a new "JTDX - ForEW1" data folder, separate from the original jtdx folder.

I usually don't start with n1mm; I set up each port individually and then start them, and if they can log, that's all I need.