Please follow the steps mentioned in the screenshot given below for the deactivation of your 2FA
STEPS-1: Please login using your credentials.
STEPS-2: Please Submit you Google Authentication code and click on AUTHENTICATE
STEPS-3: Click on the settings icon on the top of the dashboard
STEPS-4: Then click on the security settings and choose the button for Deactivate of your 2FA
STEPS-5: Click on the checkbox(Save profile, Trade function & Login) and click on the SUBMIT button.
STEPS-6: Submit your Google authentication code and click on AUTHENTICATE to deactivate 2FA