In my case, I received the invitation (and responded) but then did not receive the newsletter. The process after that was the same as you described (calling Axiom, getting the PW, etc.)
JC also forwarded me the newsletter in the meantime since I couldn't seem to get their automated system's e-mails to come through to me.
Yahoo has liked to swallow all mails from Axiom for as long as I've been a customer (despite selecting "NOT SPAM" many times), so I wasn't surprised it happened in this case, but it is an annoying trend.
Jason
