To put it plainly, there is nothing unusual to say by saying
Before you start guessing, let me tell you that this is basically the result of the payment method used the Apple ID linked to the device. The "Check Required" billing message appears, if you have an outstanding balance the account, the payment method has failed or has not been updated correctly. It also appears if your iOS device has never been used to make a purchase in the App Store. More after the break:
How to repair the message "Requisite Check" in iOS 11
To get rid of the problem, you need to change the mode of payment . You can opt for a valid payment method or choose
You may not be able to select Ne, if a payment is due or if the Family Share opti is enabled your device. (Open the Settings app your iOS device → Name → Family Sharing → tap [your name] → tap Leave Family.) …