I have a kobo mini and it will not let me open books from my library, I have tried to redownload on both my computers and I have the correct Id and password, but it will still not let me read the books. I do not know how to clear the drm.
If you want to clear the DRM on the Kobo, ctrl-shift-E (cmd-shift-E on Mac) to ADE with the Kobo plugged in should work.
Failing that, a factory reset of the Kobo (back up any books you have only on it first).
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