iTunes and some merchants such as Playstation, Xbox, Microsoft and Amazon use a unique billing method where their Point-of-Sale (POS) systems are not tied to a single location. This causes a bit of trouble when you try to use our block merchant feature due to the way these merchants can get around that block by running the charge through a different card processing method elsewhere.
What this means is that although you may have blocked the merchant on Current’s side, the merchant side is still able to process the purchase request made by your teen.

We’re aware of this issue and are working on resolving this for the merchants affected so that they can’t get around blocks placed by you.