I think the problem lies in the format you have purchased the book. An ebook is for digital reading and is not meant to be printed.
Though, there is a solution to opening the ebook as a pdf file in Acrobat. Search for a converter, that converts the filetype your ebook (This filetype can fx be .ePUB) to pdf. Mind that ebooks use a reflowable format for better digital reading experience. Meaning, the digital version(your ebook) won't have matching page number with the physical books page numbers.