I have the exact same problem with my Kindle. A list of books Alexa can read comes up in the Alexa app. I can double click on a book and she will start reading it. I can say, "Alexa, stop" or "Alexa pause," and she will stop. I can say, "Alexa resume reading such and such book and she will do so. However, if I just use the voice command, "Alexa, read such and such book in my Kindle library," she replies that she cannot find my Kindle library. Now, what I have been trying to make the empty headed DOT support team based in India (who can barely understand and speak English) understand, is that the problem is NOT how I am phrasing my request. The problem is how Alexa connects to Kindle. That is where the problem lies. My husband and I both are computer savvy, and by the way his Dot connects to all of his Kindle books without any problem. There are two major problems that need to be addressed. First is the understanding level and technical level of Dot support and the other is HOW the Dot connects to the Kindle library. That is where the technical issue, whatever it may be, is centered.