How to turn off two factors authentication

See -> Two-factor authentication for Apple ID

Two-factor authentication for Apple ID - Apple Support

• If you're already using two-factor authentication with your Apple ID, you can't turn it off. If you updated to two-factor authentication inadvertently, you can turn it off within two weeks of enrollment. If you do, your account is less secure and you can't use features that require a higher level of security.

lamia209 wrote:

How to update to two factor authentication? What are the steps?

Two-factor authentication for Apple ID - Apple Support

Turn on two-factor authentication for your Apple ID

If you're not using two-factor authentication for your Apple ID, you can turn it on right on your device or on the web:

• On your iPhone, iPad, or iPod touch: Go to Settings > your name > Password & Security. Tap Turn On Two-Factor Authentication. Then tap Continue and follow the onscreen instructions.

• On your Mac: Choose Apple menu  > System Settings (or System Preferences), then click your name (or Apple ID). Click Password & Security. Next to Two-Factor Authentication, click Turn On and follow the onscreen instructions.

• On the web: Go to appleid.apple.com and sign in with your Apple ID. Answer your security questions, then tap Continue. Tap Continue when you see a prompt to upgrade account security. Then tap Upgrade Account Security and follow the onscreen instructions.

Get support from Apple directly -> Get Support or call Apple in your region see -> Contact Apple for support and service or check -> here for more support and assistance.

If you updated to two-factor authentication inadvertently, you can turn it off within two weeks of enrollment.