Attempts to manage outstanding deliveries as follows:
Amazon Device Support> Managing Your Amazon Devices, Content, and Accounts> Bring items to your fire or Kindle You can provide content from "Manage Your Content and Devices" to your device or the Kindle app for reading. You can deliver content through "manage your content and devices" on compatible devices. Manage your content and devices From your computer: 1. Go to Manage your content and devices. 2. Select the title and click the actions [...] and then select the option to submit the content to your default device or to others. 3. If you selected Other, select the devices or Kindle Reading apps from the drop-down menu, and then select Deliver. Note: If the selected title is not compatible with a device, the name of the device is displayed in gray in the drop-down menu. 4. Select Deliver. Your content will automatically be sent to your device or read app when connected to a wireless network. Note: You can select pending outbound deliveries from the Show drop-down menu to view songs that have not yet been sent to your device or the Kindle app.
However, I have three outstanding deliveries that I can not delete. How do I delete outstanding deliveries?
There is a button with three points in the action column.
...Clicking displays the title of the book, the device to which it is to be delivered, and the date it was sent. These three articles are from the 16th of November last week.