How to unlock an Apple id
my daughter and I are under the family sharing plan and her is is locked how do I unlock it?
iPhone 4s, iOS 9
If this is in the iTunes/App Store, see the 3rd link.
If your Apple ID is locked or disabled - Apple Support.
If you have changed your ID or password, have you followed the steps in this article?
What to do after you change your Apple ID or password - Apple Support.
If necessary, contact iTunes Support. See the Apple Support articles below for contact information.