If you made any purchases on Prime Day and selected the slower “No Rush” shipping option at checkout in order to receive free credit to use on digital purchases, there’s a good chance that your credit will expire today if you haven’t used it yet. Check your No-Rush Rewards Summary to see how much credit you have and when it’s set to expire. You can use the credit on Amazon Video rentals/purchases, Amazon Appstore purchases (including in-app purchases), and several other places.
If you absolutely can’t figure out where to spend your credit before it expires, supporting the future development of my Downloader app through its in-app donation buttons would be greatly appreciated. When you make in-app purchases, there is no indication that your no-rush credit is being used, but you’ll immediately receive an email with a link to the transaction details where you’ll see a “Promotions” credit applied to the transaction.