If you are going to use a service that requires two-factor authentication (2FA), and you have not enabled 2FA in your user profile before, you will be prompted to set it up at login as shown below.
You will see the following prompt to first install the Authenticator app on your phone (1), then add the account by scanning the QR code (2), and finally click the "Continue" button.
Input the code you see in your authenticator app and click on “Verify”.
Now you are able to access to the service, which you attempted.
Please NOTE that the above steps will just register 2FA on the service which prompted 2FA selection, it will not be enabled on the user account level.
If you want 2FA to be enabled for all services on Veracity, go to Profile > User settings > Security, select the toggle so that it becomes blue and says 'On'.
