Kindly follow the below steps in order to cancel auto-renewal of your subscription:
1. Open the Amazon Appstore & log in with your registered Gmail ID (from which you had purchased the app).
2. Tap Menu > Subscriptions
3. Find the subscription you want to cancel
4. Tap Cancel. Your subscription will stop at the end of the current billing cycle.
If you face any problem, please reply/email us a copy of your purchase receipt at support@kidloland.com.