If you used the time-limited Demo of our products, and bought a perpetual or subscription license while the demo is still active, 

you can activate the full license in the following way:

- Open VP License Manager

- Click on the product which you want to activate

- Click on the "release license" button to free the demo / trial license

- Click on the "activate" button on this product

Since full licenses are activated the hierarchy first: perpetual, second: subscription and third: demo, the full licenses will be activated in this case.