A WinAutomation license can be unassigned/de-registered from a machine in order to be assigned/registered to another, through the following steps:
Navigate to "WinAutomation Console > Options> License" and choose "Deregister Machine" in the OLD machine.
You are now able to enter your license key to the new machine.
In case you no longer have access to your previous machine, login to the User Area of our website*, with the email under which the purchase was made and on the license key of interest, click on the "Unassign License" option.
You will then be free to assign the license to the new machine through the WinAutomation Console.
*Note: Create an account on the User Area, if you do not have one already and activate it from the email that will be sent to you.