Sometimes it can days or weeks to show up. Some people have items registered from last year that still aren't showing up. It doesn't mean you don't have it registered or that you can't get items for it, it's just a tracker.
I pre-ordered seasons on digital download the day it came out registered it and got what ever the pre-ordered dlc was but it has taking till three day's ago I got the thank you for buying seasons only now is it showing as I own it so I would not worry I could still play seasons no problems
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http://forum.thesims3.com/jforum/posts/list/656133.page