In case you don't have an Internet connection on the Keyserver's computer, you need to follow this process.

Once installed, launch the application Twinmotion Keyserver.

Click on Activate

A dialog appears explaining the process to follow.

Enter your Serial Number (XXXXXX-XXXXXX)

Copy your "Identification Number" given by Twinmotion Keyserver.

Use a computer with an internet connection and go to

Enter the "Identification Number" in the form and click Submit.

The website return a new code you need to use in the field "Manually Activate"

That's it, your Twinmotion Keyserver is now activated.