Press the "Unlock" button of the 'Unlock' window to open a browser window that attempts to connect to the Unlock web page. This will also re-enable the Site Key Edit Box allowing a new site key to be pasted.
If connection is successful, the page will request the Site Code and the registered email address.
If you accessed the unlock page via the "Unlock" button, your current site code should have been automatically entered into the unlock page. This can be ammended if necessary.
If the registered user owns a valid license, a site key will be created and emailed to the registered email address.