VSys One technical support can remotely shut down VSys Security for you. On the login screen you'll see an icon: . Click this icon to bring up the Data Unlock tool.
With this you can call VSys One's technical support team and provide the company and user key values. They'll require that you prove you're authorized to shut down security, at which point they will give you a one-time unlock key. Entering this will shut down VSys Security to get you access to the Security manager in order to reset user accounts.