I doubt that's what it means. I got an email saying that the first time around, they'd had a typo in their information, and the figure was actually a 2.5, not a 3.3.
And as for the increased offer... I was offered full tuition plus a stipend, and I originally put down the deposit, but recently got a better (for me) offer, so I just informed them that I wouldn't be attending Akron. So maybe that's where part of the extra money came from?