Scenario 1: You have an active profile and don't need to register. You can directly login at Virtual Vaults.
Scenario 2: The mail ended up in your spam folder.
Scenario 3: Your firewall is probably blocking the invitation mail. Please (contact your IT department to) add *@virtualvaults.com to the trusted senders.
Scenario 4: Ask the Vault Admin to resend the invitation. Our support team can also resend the invite to the same email address if necessary.