The mystery has been solved by JD Cowell, a member of the Visual Phasing group on Facebook! All GEDmatch kits were deleted shortly after on August 2nd, 2022.
Number 17 happens to be my unlucky number, and once again it has proved to be just that.
When the DNA results of my father’s maternal half aunt V.P. arrived not that long ago, I was all over the moon. As a half aunt, she shares quite a bit of DNA with her nieces and nephews (on 20 out of 23 chromosomes!) and her results are incredibly valuable, because they point directly to their maternal grandfather. That amounts to gold, if you are a fan of the Visual Phasing technique.