The moderators are unable to change your email address or close your account, but your email address is not visible to anyone but you, and (as far as I can tell) BEArchive never sends email to you unless you specifically request it in your user profile.
You can attempt to get your account's email address changed by emailing a request to customercare(at)bearchive.com, or if you prefer, you can create a different user ID with the desired email address and use that instead.