Unsynchronized iOS app with the app on Macbook (2 different lists of books)

Hello everybody,

             I installed ADE on my Macbook and upload the acsm file that I bought. The book appears in the library on my Mac but, when I update the library on my ADE app on my iPad I don't see the new book. How can I solve it? I tried to exit from the app, to unauthorize and reauthorize the app on my iPad, close and reopen the app on Mac but I didn't solve the problem. Thank you in advance for the help.