You didn't go flawless. You highest streak on a card this weekend was a 3 stream. Presumably you went to the Lighthouse after your 15th game, when you hit 7 wins. You then played more games afterward, including a 6 stream, without resetting your card first. When you play on a completed card additional streaks don't count. You have to reset the card for them to register. Regardless you have not been flawless this weekend at all. Here is you Trials report. If you look at your Crucible report you can see your entire game history. https://trials.report/report/2/4611686018436269775