Disabling Apple Two Factor Authentication
Instructions to Turn Off Two Factor Authentication:
First, make sure you have your iPhone in hand, as a code that Apple sends to the device will be needed.
Then click Turn Off Two-Factor Authentication. After you create new security questions and verify your date of birth, two-factor authentication will be turned off.
If someone has turned on two-factor authentication for your Apple ID without your permission, you can also turn it off from the enrollment confirmation email sent to your Apple ID or rescue email address.
Click Turn Off Two-Factor Authentication at the bottom of the email to restore your Apple ID to its previous security settings and regain control of your account. The link is active for two weeks after you enroll.