I didn't enable two-factor authentication on my account. Why is Sprintax Calculus asking me to use two-factor authentication when I try to log in?

If you used the e-sign function within Sprintax Calculus, you were required to set up two-factor authentication. This setup acticated two-factor authentication on your account. The same two-factor authentication method will also be used to log in to your Sprintax Calculus account for future logins.