1. Download Artlantis from the website.
2. Install Artlantis on your computer and open the application.
3. Select ‘Activate License’ to activate your license. Now enter your code (make sure you are connected to the Internet).
4. Click on “Activate License. After this, you will get a message that the activation was successful.

When you see the message “License cannot be validated,” it means that you have reached the maximum number of activations on your license. Then, if you still want to install Artlantis on that device, you need to deactivate it on another device.