Two factor authentication

From the article below. If it has been on longer than 2 weeks, you can't turn it off. 

Can I turn off two-factor authentication after I’ve turned it on?

If you already use two-factor authentication, you can no longer turn it off. Certain features in the latest versions of iOS and macOS require this extra level of security, which is designed to protect your information. If you recently updated your account, however, you can unenroll for a period of two weeks. Just open your enrollment confirmation email and click the link to return to your previous security settings. Keep in mind, this makes your account less secure and means that you can't use features that require a higher level of security.

Apple ID -Two-factor authentication

GodRad Said:

"There is no way to turn it off. Is this true?."

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As Eric Root Said: If you already use two-factor authentication, you can no longer turn it off.

IMPORTANT: If you forget your login information for some reason, or are just unable to sign in., you can always contact Apple Support, if an available option in your area. Go Here for contact info.

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