anyone home at mozilla support for a reply to the question about your system??

Wombat, speaking as a user I would check On the Mozilla accounts page under Security, to see if there are any options for generating a new set of codes.

The accounts page is at: https://accounts.firefox.com

I very much doubt that any codes will be automatically sent. I would hope not anyway, as anyone who intercepts the email would now have both the account email and authentication codes.

But unless if someone more knowledgeable answers, I would check the security section of the account page.

Yes thanks, under Security. In Mozilla accounts page.