Thanks,
The question is which statement in the manufacturer's brochure is incorrect. But the "other cable" is the one that came with the NanoVNA and it worked a few minutes prior to the point at which it didn't work.
I have a ISB-A to USB-C adapter I bought yesterday, and a USB-A Male to Male cable coming tomorrow. That setup will implement a USB-A to USB-C cable that whould work. If it does then we will know the problem was the cable. I suspect it will not.