Kristtynne If you ever registered these codes on the old Sims 3 website ( www.thesims3.com or store.thesims3.com ), they'd count as used. They'd also be attached to the account you were using at the time, so if you can figure out what that was and recover access to it, you could have an EA customer support rep merge it with your current account to transfer the content. The codes themselves can't be freed up in any way, even by the original account, which is why the merge would be necessary.
Keep in mind that any Store content the old account owns wouldn't transfer. So if you do own content you want to keep, make sure that the account that owns it is the one that survives the merge process.
As for some content not working on your Mac, that's a Known Issue:
Redeemed Sims 3 codes but wont download as says only available on windows? | EA Forums - 11143008
You'd need an EA support rep to add the "entitlements," as they're called, for the 64-bit Mac versions to your account.
So you'll need to contact support for both issues. The Mac one should be straightforward; link the master thread and reference EA_Solaire's accepted solution if necessary. For the others, take a photo for each pack showing the disc, its case, and the product code (clearly readable). Upload these when you submit the help request. Support reps can look up codes to see what happened to them, for example if they belong to a different account.
I managed to log into my old TheSims3 account, but only Ambitions is registered on that account. I don’t understand why the other games are not there, as I played them about 12 years ago on a desktop PC. Back then, I didn’t have an EA or Origin account — I only started using Origin/EA when I began playing The Sims 4.
