I can't redeem the code for HIdden Springs

Update I was finally get back a hold of EA ,they told me that my code was unused and had no idea why it was showing as invalid,so they gave me a new code and I went back into the sims3 offical site and put in the code for hidden springs and this time it worked and I was able to go into my purchase history and there it was for download.I checked it in the game as well and everything seemed to of been working fine.Thanks for the help and the suggestions.