I have a password manager, Dashlane, that uses my current email address and a pasword to access dropbox. Once I'm in dropbox on my account page I see my email is listed as an old email no longer in service. When I try to update the email it requires a password. The system will not accept the same password as that used to log on. I looked up the password associated wirth the old email in my keychain (MAC). The system does not accept this password either. Consequently I cannot update the email on the dropbox account page. Suggestions would be appreciated.