ERROR TO OPEN EBOOK . E_LIC-ALREADY-FULLFILLE D-BY-ANOTHER-USER

I bought ebook DMR I had this on my computer without ID. I tried to pass onother computer but I the book disapeared and the error is E-LIC.ALREADY_FULLFILLED-BY_ANOTHER_USER. The bookshop sent  me another file but I still cant downlow the file and open the book.

Im looking forward to hearing from you.