on June 27, 2013
at 08:05 PM
Your profile page says that you've been a member for 11 days ... unfortunately, about a week ago, there was a data issue, and the site lost a couple days worth of data. If you earned stuff during that time period, that's why it's gone. :-/
You can bug the site admins at the "Contact Us" link above, but there's probably nothing they can do about it.