The instructions for this new application are no help. I have installed and authorized the app on two Windows 10 devices and a Samsung tablet. I purchased an expensive book, over $100, and it shows up on ONE machine, the one I used to buy the book. No other application is aware that I own this book and there are no guidelines for syncing. I am just told that it will do this automatically, but it is not doing this automatically. There is no point to having this system if it doesn't recognize me as the same person on all devices and show me everything I own.