If this is from years ago that feature was discontinued but this article may help: TS100553 (may take a while to load)
There is a new password vault feature in some suites, called Safekey
Probably your best bet is to contact Technical Support directly, it's free by phone or online chat and linked below.
Toronto ▪ Canada
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Without the password, or the correct answer to the questions, there's nothing you can do unfortunately - your data is secure from people who don't know that information.
Sorry - there's no other back door.