How to Turn Off In-App Purchasing on Your Fire Tablet
Swipe down from the top of the Fire tablet.
The Quick Settings screen appears.
Tap Settings (2). The Settings screen appears.
Tap Applications (3). The settings screen for Applications appears.
The App Settings screen appears.
Tap In-App Purchasing.
The In-App Purchasing settings screen appears.
Tap Allow In-App Purchases.
The Password Required box appears.
Type your Amazon account password (7). Tap Continue (8).
You can tap the Back arrow (A) to back up one level in Settings or the Home button to return to the Fire tablet Home screen.