Hi Ros - I'd be willing to bet it was me, and there was some weirdness going on that kept switching my personal and my project accounts so that I was getting confused as to whether I had sent a TL request from me or the project (or both). So I suspect I deleted the request once I saw it was a duplicate, or something along those lines.
I usually use Chrome for my personal WikiTree-ing and Edge for Notables, and I kept checking and suddenly Chrome had the project account and Edge had my personal one. I really don't understand it, but once I realized it was happening, I deleted several of those that were sent incorrectly. My apologies for the confusion...