ASCM File to PDF (or any other E-BOOK Readable filetype)

I bought a Book online. I downloaded the ASCM Data and Adobe Digital Edition.

Due the Fact you cannot work (just read a Book) there, i wantet to convert the Data to PDF or sth. like that. 

I first red a few Tutorials online, with authorization and so on, but my Problem is after converting to PDF, the PDF Data is complete empty and cannot be converted to sth else. 

Its like the Data isnt there.