@uenkkrytvx Do you still have the code, and can you register it now? The code is printed on the back of the insert that comes inside the case. Or, if you have access to a computer where the game was installed at some point, you may still be able to find the code there.
Windows: https://sims3.crinrict.com/en/2013/09/how-to-find-your-serial-number.html
macOS: https://bluebellflora.com/finding-your-serial-key-using-terminal/
I can confirm that contacting costumer support on this is a waste of time (45min in my case). They are so restricted when it comes to handing out a new code. I've spent 5min on booting up my decade old laptop and extracting the key, despite having zero computer knowledge. Doing so will be your best bet.
