Re: I am unable to login to Sims 3
@Vowels-OTG and @karieddings The Sims 3 launcher and Main Menu both use the password tied to your EA account. However, there are a few reasons this can fail. One is special characters in the password; another is cached data. For the first, change your password to something with only letters and numbers, which you can do on any EA site; for the second, clear Edge's Internet Explorer mode data, again, and delete the file labeled [your email].bin inside Documents > Electronic Arts > The Sims 3 > Downloads.
Additionally, if you use a VPN, try disabling it.