If you use two-factor authentication with your Apple ID, your device is trusted when you sign in. You won’t need to approve your device separately to turn on iCloud Keychain. So you cannot see Advanced option. To display it, you can follow the steps below to turn off two-factor authentication.
Step 1: Go to Apple ID account page.
Step 2: Sign in with your Apple ID account and Password.
You will get a message with a verification code in your trusted device. Enter the code to continue.
Step 3: Then click Edit in the Security section.
Two-factor authentication is an extra layer of security for your Apple ID, when you remove this extra layer of of security, you will only be asked for a password when you sign in. Here will show you how to turn off two-factor authentication for your Apple ID.
If you turn off two-factor authentication, your account will be protected only with your password and security questions. You can follow the steps below to turn off two-factor authentication.
Step 1: Go to Apple ID account page.
Step 2: Sign in with your Apple ID account and Password.
You will get a message with a verification code in your trusted device. Enter the code to continue.
Step 3: Then click Edit in the Security section.
Step 4: Click on Turn off Two-factor Authentication link.
You need create new security questions. After done, click Continue to verify your date of birth, then verify you rescuing email. After done, two-factor authentication was turned off.
