Sims Medieval Redeem Code From Disc Version

Hello EA Help.

So recently I had the idea to re-install my CD-ROM version of The Sims Medieval.

After installing it and updating it, the game wouldn't launch. So I uninstalled it and tried to see if I could download it with Origin.

When I saw the ''Redeem A Code'' option and saw I could enter my product code of the disc I got excited.

When I entered the product code it did found the game, but it said I couldn't redeem it on Origin and had to go to an other site.

The site: https://store.thesims3.com/myAccount.html

When I was there tried to redeem it under the ''Redeem a Code'' tab.

The problem is, the field where I had to fill in the code only had 4 squares, while the product code I had has 5 squares.

I tried to switch to my country [I first tried it on United States settings and switched to Netherlands] but this didn't help.

I also tried to type in the code in different ways, but this didn't help.

What can I do to activate the game on my Origin?

A little update: This also happened trying to redeem Battlefield Bad Company 2, also to the same website.

[If this is the dutch forum again, I am sorry but my settings are in English.]