unable to make in-App purchase because iTunes not saving cc security code
I have enabled family service for multiple devices. When one of the children tried to make an in-app purchase, he got a message saying that the adult in charge should enter the security code for the credit card before payment can go through. After lots of looking around I finally found out that under "Settings-> iTunes & App Store -> Apple ID: someone@email.com -> View Apple ID -> Payment Information -> Credit card info" there is a blank security code for my cc. I enter, and press Done. Nothing happens. The code is not saved.
I go to my computer and launch iTunes. From there I enter the cc code info. Click Save. Again, nothing happens. How do I know? Because when I open the account info page, the security code is blank.
I understand if you don't want to store the security code to prevent fraud, but then give purchasers on a family device a chance to enter it somewhere during the purchase. Not sure apple has thought this through at all. Seriously contemplating migrating away from Apple.
iPhone 6, iOS 8.4.1