Hello! My name is***** am a computer professional with over 15 years of experience with both Mac and Windows computers, phones, tablets, e-readers and printers. It would be my pleasure to help you.
Please login to your Amazon account at http://www.amazon.com/myk. Select YOUR ACCOUNT. From the drop down menu that appears, please select MANAGE YOUR DEVICES AND CONTENT. On the page that appears next, you will see a CONTENT Tab and a DEVICES Tab. On the CONTENT tab you will see all of your Kindle book purchases. You can sort them by title, author or purchase date. Please locate the book that you want to download to your Kindle, select it by checking it and then click on the ACTIONS column. Choose deliver as the action. Select your device from the Device list. If you have more than one Kindle, make sure that you choose the Kindle that you are actively using. Don't select the Kindle Cloud reader unless you have downloaded the Kindle Cloud Reader APP to a computer or device other than your Kindle and wish to read it there.
If you still have issues after following these steps, you may be nearing full capacity on your Kindle, and may need to delete a few of the books that you have already read. The books that you delete from your Kindle will continue to be available at the Amazon website under My CONTENT if you should wish to download them again at some point in the future.
Please give this a try and let me know the results. If this resolves your problem, would you mind taking a moment to rate my service? I'd really appreciate it! You can give your rating by selecting the stars located on the top right of the question page and then clicking on submit. If you need more help, please let me know. I am committed to working with you until your problem has been resolved. Your complete satisfaction is my goal! Thank you!