Open the Security setting in your account via My Account -> Account Security
What Happens if 2FA is Not Enabled?
If you do not manually enable 2FA, we will automatically enable email-based 2FA for your account. This means each time you log in, you’ll need to enter your username, password, and a one-time code sent to your registered email address.
With this option you will still not be able to enable the Trustee feature, this is only available for customers who enable the 2FA hardware or application based 2FA options.