Each license key can only be used for 2 computer at the same time. Therefore, if you want to activate on a third computer, you must purchase a new license key, or deactivate the license on one of the two activated computer.
To deactivate on the current computer, click ? button (About Auto Light), and then click Deactive License. A message box will appear saying “License has been deactivated!“, and you should be able to activate your license key on new computer.
