The Sims 3 cannot reedem a code, code expired

Hi, I have a problem with adding codes for my Sims 3 DLC to the EA app. It says that the code is expired (for DLCs like Island Paradise, Seasons, etc.), but for some, it says the code has already been used even though I haven't used it. I can't contact the store employee anymore because I purchased it a long time ago and the store no longer exists. It was a verified and legitimate retailer.

I also tried adding these DLCs through The Sims 3 Store website, but it didn’t work because my code is 20 digits long, and the website only allows 16-digit codes.

Thank you for your help.