How-to
How do I turn on two-step sign-in (MFA)?
In short
Link an authenticator app to your account, so signing in needs your password and a 6-digit code.
Open your account menu and go to Security.
Click Set up two-factor.
Scan the QR code with an authenticator app, such as Google Authenticator. If you cannot scan, type the key shown under it.
Type the 6-digit code from the app.
Click Confirm. The card now says On.
Good to know
From then on, signing in asks for your password and then a code from the app.
Keep the key and the QR code private. Anyone who has them can make codes for your account.
Your platform or academy may require two-step sign-in for admins. If so, it cannot be turned off here.