Wrong OS [ Edited ]

[MyNameisDante666]

I bought The Sims 3 a long time ago (around launch date) and I was having trouble installing it. Later I realized that I had bought the game for the wrong OS (I bought for Mac, when my computer was Vista), so I kinda just gave up on the game. Last month I bought a new high-end gaming system, so I wanted to try the TS3 in it. Can I download it for my OS (Windows 7 now) by registering the game and using my serial number?

[MyNameisDante666]

I tried registering it on Origin and it says the serial number has already been used. I think that I registered it on the The Sims 3 website, but I can't remmember which e-mail I used to do it. Isn't there any way of finding out?

[crinrict]

For everything account/serial code related, you need to contact Customer Support.

They can be found here: https://help.ea.com/contact-us

See this post if you have trouble with the site: http://sims3.crinrict.com/en/2012/10/how-to-contact-ea.html