Two-factor authentication (2FA)
Enable 2FA
Select the button with your name in the top right of the screen and then select Profile.
At the bottom of the profile page, select the Two-factor authentication… link.
If your app supports QR Codes, scan the QR code with your authenticator app of your choice. Alternatively, if your app does not support scanning QR Codes:
Select the Copy secret button to copy the secret to your clipboard
Enter the secret in your clipboard into your app manually.
Enter the code it returns in the two-factor code box.
Select the Enable two-factor authentication button.
Disable 2FA
Navigate to the Profile page and select the Two-factor authentication… link at the bottom of the page.
Select the Remove two-factor authentication button.