Problem With Authorization

Hi everyone. I am new to Digital Edition. In fact I just bought my first eBook from Wiley!

When I was opening the document unfortunately I did not enter my ADOBE ID, assuming that I can do it later so I just authorized my PC. Now that I want to have the book on my iPad it seems that Adobe ID was required!!

I can think of one of the following solutions but I don't know how to do it:

- Somehow open the .acsm file, that I have, in an iPad application

OR

- Register the publication in Digital Edition with my Adobe ID therefore I can open it everywhere. 

Please HELP! I am really in need of finding a way to read the book in my iPad.