Amazon cancel digital orders.
In most cases, items shipped from Amazon can be returned within 30 days of receipt of shipment.
Amazon cancellation policy for digital products and services;
Games, software downloads, and purchases from the Amazon Appstore, the Amazon Digital Music store or the Amazon Video store are not returnable after the sale unless otherwise specified.
Books purchased from the Kindle Store can be returned within 7 days of sale. Once a refund is issued, you no longer have access to the book. To request a refund and return content, visit “Manage Your Content and Devices,” select the “Actions” button next to the title you'd like to return and select “Return for Refund.”
Kindle books you receive as a gift are eligible for exchange for an Amazon Gift Card before acceptance.
Subscriptions to titles in the Newsstand section of the Kindle Store (magazines, newspapers, and blogs) can be canceled at any time by visiting “Manage Your Content and Devices.” For more information, see “ Kindle Magazines and Newspapers.”
Apps and In-App Products purchased from the Amazon Appstore may be eligible for a refund within 90 days of the sale, depending on the circumstances. To request a refund, visit “ Your Orders” and select “Return for Refund” next to the order. If you do not see a “Return for Refund” button, you are not eligible for a refund.
Digital educational resources can be returned within 7 days of sale for a resource that has not yet been downloaded.