WSJT-X should not be run as Administrator. The preferred method of overcoming the Security constraints imposed by the OS, that running as Administrator bypasses, is to install WSJT-X into a folder OUTSIDE either of the "Program Files..." directory trees.
If WSJT-X is installed as per the setup instructions, there is never any need to run it as Administrator regardless of the Windows version.
Happened to me as well. I tried to resolve by uploading my entire log again and consequently lost 25 QSL matches!!!
emailed LoTW help 2 weeks ago and have heard nothing!!
I went through my logging application and did a report on all LoTW QSLs and went through each one and compared to LoTW. Luckily I only had 250 QSLs to check.
Once I identified each QSO record that had lost its match, I reuploaded that QSO record alone. I eventually recovered all lost QSLs.
Hope that might help.
de Laurie, VK3AMA
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