Bought / registered digital game on Origin - Serial Codes Not Working on Sims Website!

So on Friday 11/23/12 I purchased The Sims 3: Seasons and started playing. Part way through my session I looked at my profile, after signing in, in game and decided to register it through the wall since I hadn't really done so in the past. I put in my serial number and it said I had partial access and that I had to log in to get full access. Okay I figured I'd do that and when I look at my profile through The Sims 3 Community it doesn't show that I've got The Sims 3 registered to my name. Odd, so I try registering it after logging in and I got an 'invalid code' error after entering it. Did my serial number get posted to someone else, or just lost to the ether? How can I get my legitimately owned copy of Seasons registered to my account now?