Sims 4 packs - Code already redeemed
I started playing Sims 4 on PC in 2014. Back then, we still needed to use Origin. I purchased a few packs, some digital, and some physical.
Quick backstory: On my EA account, it states that I've been a member since 2012. To me, this indicates that I am using the correct details linked to my original Origin account. I've only ever had one Origin account, and when it changed to the EA app, I ensured that I used the same login details when moving over to EA because I knew making a new account would lead to losing all my purchased content. Therefore, I made sure it was all the same account details.
Present day: I've been wanting to purchase new packs for The Sims 4, but because I've purchased 90% of the packs on PS4, I put off purchasing new packs for PC. Anyway, I recently remembered that I had multiple purchased packs on PC, as mentioned before. When logged in to EA, it says that I need to purchase the packs again. When I type in the codes of my physical copies, it says it's already been redeemed, yet for a short moment, a screen pops up stating that it worked. There is absolutely no way for me to access my purchased packs, and I am in desperate need of help. I have the physical codes, I have proof that I purchased digital copies on this account, but I can't use them. Other purchased games (not Sims-related) also need to be repurchased.
WHAT DO I DO? I am so fed up.