You can find your e-books in the Downloads and they are not displayed in your Learning Center. After signing in, please click your name on the top right corner of our website. Then, you will see the Downloads button in the drop down menu. You can download your ebooks there!
If you are using a mobile phone, please click the button on the upper left corner and then your username. After that, please click the cogwheel icon next to your email address and you will see the "Downloads" button.