[Elecraft] KX3 COM Port Not Working

[N8NCR]

I have a brand new KX3, kit build. I had a hard time getting the KX3
utility to connect to the radio and its being rather picky. I was able to
get it to connect once automagically and after that it hasn't worked again.

I've tried:
2 different KXUSB cables
Different USB ports
Different computers (Win7/Win10)
Different baud rates
Setting baud rate in device manager to corresponding rate on radio
Updating drivers
Restarting computer/KX3

I'm plugging in the ACC1 port and running firmware 2.38 and out of
troubleshooting steps. Any ideas?