Vault - 2 Factor Authentication

Hi All
I have VIP 2 Factor Authentication set for my main Norton Account which is great, however unless I'm missing something I'm surprised (amazed actually) that the Norton ID Safe Password Vault only requires 1 password to unlock all of your secure and important passwords you use day to day.

I have managed to log into my password fault without 2 Factor challenge via the IE Toolbar as well as the following URL - https://identitysafe.norton.com/vaultLogin

Am I missing a setting within Identity Safe to turn on 2 Factor Authentication for the Vault or is it that 2 Factor Auth just isn't available for the Vault?

I haven't tried accessing my vault from another computer yet, just my home PC that is trusted within my Norton Account.

Many thanks

Rudi23