Thank you for your reply, Rebekah. I wrote to FTDNA and received an answer a few minutes ago. It seems that he doesn't have matches because he didn't order the upgrade. I was never aware until now that an upgrade was required, but I see that it is specified on the order page. My cousins did not have to upgrade, but perhaps that's because they transferred from DNA Heritage--or maybe the upgrade requirement is relatively new. Lindsey