I have been using ADE for several years. On my second Kobo borrowing library books. Now, I am getting the error that says because I previously deauthorized my ereader I need to re-import the book. I have done this several times. Authorized, reauthorized. Downloaded and redownloaded books. Now, my kobo will not open any library books. I even bought a brand new kobo with the same result. Suggestions anyone?