dalecoy
WL only works in USB.
Oh. As far as I can locate, you never said that before. The first thing you posted was: "I have the USB version of WL, which I have changed to "serial port" in WL and used that for Cumulus, also."
So:
Yes, I have tried to download the driver from Davis ...
BUT, for whatever reason, my PC won't let me. Since I have WL loaded on 2 PC's, I have tried downloading the driver to both, without success.
If you actually can't download things to your PC, then you need to fix that problem. If you mean that you can't successfully run what you downloaded - did you try the link I provided? I don't know if it's better than others, but ....
At any rate, I now understand the difficulty. You haven't converted the USB logger to "virtual serial port". Until you do that, it ain't gonna work. I think several other people have given you similar advice, and pointers to where to look.