Not to be a pain in the ass, because I am stupid and probably mis-understood something, but shouldn't this auction have ended at 9:01:00?
I see his point here.
https://i.imgur.com/kElkhZr.pngThis bid should be invalid as it came in 49 seconds after the auction ended??
Has OP contacted you yet r_a? Judging by his own specific rule set I would agree that the "winning bid" is invalid.