Changing form for feed with lost credentials

[F_dc]

Hi. I'm hoping you can help me recover the login info for a feed burner feed.

I am new to my office and no one can remember what the credentials are, but we need to change the contact information on the feed burner form so that it stops going to an email address that is no longer used.

We are on wordpress using the Feedburner plugin, The unsubscribe notices are definitely coming with the label "feed burner" to "b-...@ourorganization.org", but I can't find the feedburner address within wordpress.

Hitting the "forgot password" link does not work because we've tried all possible usernames and passwords.

Thanks for any help you can give.