Fill in your license email address and license key, then paste Hardware ID value (MAC-A28... from the screenshot above) in the 3rd box and hit Submit.
Your Activation Code has been generated
You Activation Code for the offline system has been generated. Now you need to transfer it again to your offline system.
Open OmnIScope again, go to License / Register window:
Finishing license activation
In the "Activation Code" tab paste your code in the bit text box and hit Activate.
Your offline system should be fully activated now.