How do I set up two-factor authentication (MFA)?

Go to Profile → Additional Security → Add MFA. You can choose between two methods: • Phone (SMS or call): Enter your 10-digit US phone number, choose SMS or call, and enter the verification code you receive. • Authenticator app: Scan the QR code with Google Authenticator, Authy, or a similar app, then enter the 6-digit code it generates.