Subscriptions purchased via Apple iTunes billing system cannot be canceled directly by developers due to technical restrictions. To cancel your subscription, please follow these steps through your Apple ID:
Review Apple’s official guide on how to cancel subscriptions.
Make sure you are signed in with the same Apple ID used for the purchase.
Follow the steps outlined in this guide.
Note: Please double-check that you’re logged in with the correct Apple ID. If needed, repeat the steps to ensure the cancellation is completed successfully.