Now to the problem. I just moved my installations over to a new Windows 11 PC, and most things have moved well and are working well. I used the ARRL steps to move the TQSL certificates, etc., to the new machine, and they all look correct when queried from the TQSL forms. However, when I try to upload to LOTW it fails with the message shown in the attached image.

I have double-checked the "station location" in the certificate and it is correct and has not changed. I queried the LOTW help desk and their answer was not helpful, but pointed to Log4OM being a possible problem. I'm sure if it was, there would be many complaining. Does anyone have any idea what this failure points to?
73, Duane AC5AA