Can’t download the free add-ons for The Sims Stories

Hi, on the back of my The Sims Stories game it says that I can download free items when registering on this site:
https://diesimsgeschichten.de/CoolStuff.html

https://i.imgur.com/7M5DZze_d.jpg?maxwidth=640&shape=thumb&fidelity=medium


However I cannot login and therefore cannot download any of the items. Is there any other way of getting those items?

Thanks!