I did factory reset on KOBO Touch and loaded KOBO library, then DRM free EPUBS, and then recopied my one ADE DRM EPUB item. I put it onto the micro-sd using Windows Explorer.
Now I am puzzled. My computer is both authorized and not. My e-reader did read the item at one time but needs authorization now. With my previous desktop I acquired the document from e-book publisher and I do not think that I had an ADE password at the time. I do have a URL link. It has been copied onto my new computer. I can read the item with no difficulty now on my desktop. I cannot reauthorize my e-reader without a password. I may have had one but am not sure at this point. Should I contact the publisher?