Help me please!

Okay so I installed Sims 4 around christmas. And I went to play today and it wanted me to sign into orgin...took forever but I remembered my info...and then Sims 4 wasn't in my games? So it had me type the product key in and it said it had already been used. So I thought maybe I'll just uninstall the game and reinstall it...and again it wanted me to type the product key in..and it said it was used. How do I fix this? I just want to play!

You didn't accidentally log into a different account?

No I only have one account

If you have proof of purchase, you should contact EA about this.
I'm fairly sure they could just give you a new code (if you have some proof you purchased it, like a bill or email)

I had same problem but with me i

Try this it could help you
Game advisors can be found through live chat.

1. https://help.ea.com/en/contact-us/
2. Click on the orange NEXT button
3. Select a platform
4. Click on the orange NEXT button
5. Select a topic and describe your problem in a few words
6. Click on the orange NEXT button
7. Click Chat Now to chat with a Game Advisor

In Details here: How to contact a Game Advisor using the new EA Help pag

S4PE IS GOOD

Make sure that nobody has used the product code,or if when you got it for Christmas,the box's wrapping was not opened,or consult EA or Origin if you have anymore problems

I had the same problem with the sims 3 Late Night but i explain my problem to EA and then they gave me an other code, you can try