I setup digital editions and authorized without ID. I downloaded specific epub on a laptop I don't have currently and was trying to read it on home computer. It states that the file has already been used by some one else and would not allow me to read o

I setup digital editions and authorized without ID.  I downloaded specific epub on a laptop I don't have currently and was trying to read it on home computer.  It states that the file has already been used by some one else and would not allow me to read on that computer.  Is there a way to read on both computers or failing that delete from laptop so that I can read on home computer?