Once Registry Reviver is open, to activate the product you can click on the 'Register Now' button on the left hand menu. This should open a window that asks you for an Activation code. This activation code can be found on the post purchase web page you saw after your purchase or in your purchase confirmation email. You can also register here to obtain an activation code. Please check both your inbox and you SPAM folder for this email, it will be from 'cleverbridge'.