We don’t have sufficient information to reset your security questions.

see this link:

https://support.apple.com/en-us/HT201485

This is a volunteer forum. To speak directly with Apple call 1-800-MY-APPLE or go to apple.com/contact for a list of international phone numbers.

You need to contact Apple's Account Security team. To reach them, click here and pick a method; if you can't use any of the ones listed, fill out and submit this form.

JimmyCMPIT: People who get the 'sufficient information' message encounter it when following the procedure in that article. It isn't useful to them.

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