Just checking for clarification how far you got down the process ...
- Have you been unable to download even the initial .acsm file?
- Did you download the .acsm, but now cannot use it to download a DRM .epub file?
- Or have you even got a .epub file, but it refuses to open/read it?
Is it just the one book that is failing, or are new DRM books (bought/library) failing to work with ADE and the Kobo as well?