Was the reader recornize of your Device?
I have the same problem with my new Onyx Boox C67ML Carta - Digital Editions does not recognise it, however it recognises normaly another Boox which is the same but a bit older. And, YES, the reader is normaly recognised by Windows.
Furthermore, I was unable to erase the authorization of lap top an which ADE is instaled so I followed the instructions Activation errors | Adobe Digital Editions . The procedure erased the authorization, however, I can not authorize again (by InkBOOK Vendor) - ADE replies with an error:
I would appreciate to receive the solution of the problem or at least some hints.