Loss of cars and driving effects

Game : Need For Speed Unbound. Platform : Xbox Series S 

I play through Game Pass. One day, when I didn't have Game Pass, I decided to purchase the game to continue the beautiful story. I realized that several vehicles were gone, like the RS6 and the Dark Horse  , as well as several driving effects, which I had already equipped. The cars had disappeared, and the effects appeared blocked. What should I do? Or where can I contact someone? These are things I purchased through Speed Pass.