I need to turn off two factor authentication on my older iPad devices, but it doesn't look like I can. Why not? How do I work around the extremely annoying and buggy feature when the 2 factor auth does not work with the older iOS? I have a new iPhone X, but my kids use very old iPads.
See this article from apple
https://support.apple.com/en-us/HT204915
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.
See this article from apple
https://support.apple.com/en-us/HT204915
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.
How to turn off two factor authentication
