Forza Horizon 4 autopass 84 cars does not work

I bought and entered the code but I cannot see the 84 new cars. What am I doing wrong? Should I do something extra to enable these 84 cars?
I really don’t understand this. Please help.

Go to manage game and add-ons and see if everything is installed. Maybe it didn’t install the Pass automatically. It doesn’t say it’s the Car Pass instead you should see each car separately when everythingis installed properly.