In my account, boxes 3, 4, and 5 have been checked since day one and I get plenty of emails from WGT, but emails from the CC email option do not work. I tested it myself, and no one else got it either. I get notifications about posts in the CC forum (sometimes even duplicates) but the mass CC email does not work).
I have read posts dating back several years about this problem and it still seems unsolved, or at least, not fixed.
This really hampers CC communication.