I got an email from amazon saying I had to add your emal to my "Approved e-mail addresses" as the book could not be delivered into my Kindle.
What is the email address you use to "send to Kindle".
I've added "email@example.com" and "firstname.lastname@example.org" and it's obviously neither of those as the book has not turned up in my Amazon's "Manage Your Content and Devices" page.
Sorry for your frustration concerning setting up the "Send to Kindle" option. The email address you will want to use is: email@example.com. More information on this can be found here: http://shop.oreilly.com/category/cust.... l hope this helps and have a great day!