Windows: Open Across Center and from the main menu of Across Center choose the [Help] and then the [License Manager].
OSX: Click on the Dock icon of Across Center and from the main menu choose the [Help] and then the [License Manager].
Online License Management
Offline License Management
If your computer is connected to the internet, you can easily activate or deactivate your product key.
If your computer should not be connected to the internet, you can activate or deactivate your product key with Offline License Management. However, you need another computer that is connected to the internet to upload (and download) the activation/deactivation request/response file to/from the Across Offline License Management page.
License Activation: You can activate your product key and can also extend the license period of your product key in the [License Activation]-group.
License Deactivation: If you want to move your product key to another computer, you can deactivate your product key in the [License Deactivation]-group and then activate it on the other computer to move.