[any ANONYMOUS forum user]

'any ANONYMOUS forum user' is just the name given to anyone who chooses to post anonymously. When you reply to this message,(by hitting the post reply button, not the quick reply option) just check the box at the top of the page and your post will also be posted anonymously.

With regards to your situation, i'm no expert, but I understand that most ebook DRM is hackable, google 'calibre DRM tools apprenticealf' or some combination thereof to find the relevent material, theres probably also so decent threads here.