forza 3 game add-on content

I recently bought forza 3, so I could boost my points up in my profile, and I tried to use the game add-on content but it kept saying the code was invalid, I can see a point by the game being a number of years old, ie the code would be old. I scratched the silver panel off annd entered the 25 letters/numbers code, I mean,! Come on if content is still available to purchase on forza 3 the surely my game add on content should be available also, as I stated , I scratched the silver panel myself and entered the code myself. (classic car pack) is the value of the code, can you help thankyou peace out there :heart:★☆★☆

no love …may help you to read this.