Parental gate for app targeted to both Kids and Adults

We have developed a philanthropic app. The users we are targeting for the app are both kids and adults. As the users can be kids as well, I have selected the age rating 4+ in the app store and added a parental gate before heading to Payment related options.


My question is, can we hide and show the parental gate based on the age of the user . ie, when the user is adult then directly going to payment page else if user is kid then show the parental page before payment. (We collect the age from registration screen). Or is there anyother option to choose the age rating which support both adult and kids.

Parental gate for app targeted to both Kids and Adults
 
 
Q