Overdrive ebooks do not show up in ADE

I learned ADE functions as an impediment to transferring ebooks onto e-reader devices.  I have attempted for months to make use of Overdrive but it has been a worthless exercise because books do not show up in ADE.  Despite following the usually useless help advice of installing, reinstalling, deauthorizing, reauthorizing, renaming files etc.  It fails to work.  Cloud library works great.  I do not have to find my books in ADE to transfer them to my nook.  Is the problem with Adobe or Overdrive?  The books download as an ACSM file.  I can read them on my PC.  I cannot move them to ADE.  I get a message the the E Lic already fulfilled by another user.  I have no idea what that means.  ADE and Overdrive are authorized by me only and have the same usernames and passwords.  I must be missing something.  what is it?