Another try at a better place (I hope):
How to select in VESC Tool the COM port of PC for USB connection to VESC6?
Menu connection: Port "COM1" is the only port shown. Clicking button "refresh serial port list" results in nothing new, only COM1.
The last working connection was shown as COM6, but after successful running motor wizzard the tool lost connection when I tried to select the control input. (Should be ADC, wired potentiometer.)