When my child's account is used to open WhatsApp on their iPhone (iOS27) we see the message ""WhatsApp" Exceeds Your Age Rating" and a button labelled "Ask Permission". Tapping the button takes us to the App Store with a dialog saying "Ask Permission" and a button labelled "Ask". Tapping this button causes a message to arrive on my parental device, where I click Review Request, tap Approve - followed by a push notification on the child device informing us that the age range exception has been approved.
We then try to open WhatsApp again and see it downloads and installs, for some reason. Opening the app after download greets us with the same ""WhatsApp" Exceeds Your Age Rating" message and Ask Permission button.
How can I grant permission? This user journey appears very broken - but I thought this was supposed to have been fixed in this version of iOS.