Publish on Amazon and you can’t give away books.
Authors always want to promote their work in the easiest way they know – giving away a few review copies and offering discount codes. Amazon doesn’t like this, want it, or make it easy. Amazon are about Sales; they are cool with promotion, as long as they are doing it!
Smashwords doesn’t solve the problem as Amazon has limited them from uploading. Therefore, you can’t be sure if and when your title will be published to Amazon through them. Bah.
Amazon’s 90 day exclusivity clause f0rks everything.
Other things which need to be done by the Author (for my future reference really): they need to complete their financial info on this page https://kdp.amazon.com/account
back soon – Mark