How do I turn off two-factor sign-in?

Click your name or picture at the top right, then My Account, and on the My profile page find the Two-Factor Authentication card, below Update Password. Click Disable Two-Factor, type your password and click Turn off. Signing in then asks for your password only, and Panoramr emails you that two-factor was turned off. There is no setting that remembers one computer while two-factor stays on: it asks for a code at each sign-in. Set up two-factor authentication has the rest.