The social security website has been merged into Login.gov. We recommend all clients transition to login.gov to review your social security benefits.
How to Transition Your Account
To transition your account to Login.gov, sign in to your my Social Security account. Then, you will see a prompt to transition to Login.gov. After linking your account, you should see a confirmation screen. You should then have immediate access to your my Social Security or other services.
If you already have a Login.gov account, you do not need to take any action.
https://blog.ssa.gov/how-to-transition-your-social-security-account-to-login-gov/