Voyager user licenses are tied to a specific computer's Machine Key. To find your Machine Key, go to Manage Voyager > Settings > License.
You cannot move licenses from one computer to another without updating the machine key. If you need to move the license to a new system, find the machine key on the new system and send that key to Voyager support. The support team will generate a new license for the new system that is linked to the new machine key.