Cannot turn pages in Adobe Digital Editions

I am a new user, just dowloaded ADE 3.0.86137 and an eBook I recently purchased.  When I try to click on different items in the table of contents, nothing happens-no movement (although if I close the program and open it back up, it opens on the chapter I clicked on before I closed it).  When I try to turn pages within a chapter, the page number at the bottom of the screen changes but it remains on the same page it was on when the program opened.   How can I fix this so I am able to read the book?