Account has been locked
How to unlock my itunes and app store
iPhone 6s, iOS 12
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If it's locked : If your Apple ID is locked or disabled - Apple Support
If it's disabled contact iTunes Support in the country where you live (and which is therefore the country on the account) and see if they can/will re-enable it : If you see a message that says 'Your account has been disabled in the App Store and iTunes’