Wel, I have no idea. First, by clicking on your name, the recorded score was only 65%. (Which would keep MP3 access forbidden, naturally.) If what you said is true, and you honestly did score better at 80 or 90%, then I have no idea what happened, unless you were unlucky enough to attempt a test back when we were suffering those weird "write-lock" failures of the server. I even just used my test account with a score set at 65% and earned a 90% just to duplicate this and it updated perfectly fine.
I'll just take your word for it and hope you're an honest person and fix your score at 90%.