How do I change my HISTORY Vault sign in email? To update the email address you use to sign in to HISTORY Vault, please send us a message and include both the email you are currently signing in with and the email you would like to change to. Related articles I’m having trouble signing in to HISTORY Vault. What should I do? I'm not sure where I originally subscribed to HISTORY Vault. How do I find that? How do I cancel HISTORY Vault? I want to update my credit card information on my subscription. How can I change the credit card on file? Do I have to register in order to use the HISTORY Vault app?