LOGIN USING TWO-FACTOR AUTHENTICATION
This is valid for smartphones as well as users not having smartphones requiring desktop installation
To generate Time-Based One-Time Password codes, you need to install and configure an app on your mobile device: For Android devices, the Authy, Google Authenticator, FreeOTP Authenticator, or Toopher apps are the most popular token generators.For iOS devices, the Authy, Google Authenticator, FreeOTP Authenticator, or Toopher apps are the most popular token generators.
Please scan the QR code or manually enter the secret, then enter an authentication code from your app in order to complete setup.
You get the QR code and secret by email. If you did not get it, please open a support ticket.
I do not have a smartphone. What do I do?
Please refer to this article explaining how you can install it on a desktop - multiple alternatives available. You can even install it on the browser.