On USB-eLicensers (Steinberg Keys) that are supplied along with a Steinberg program, a temporary 'All Applications' license is stored. This license enables the usage of the software for 25 operating hours - given that it is installed and the key is connected.
In order to be able to use the program after the expiration of the 25 hours a permanent license has to be stored on the USB-eLicenser. This is done by using the Activation Code that is printed on the "ESSENTIAL PRODUCT LICENSE INFORMATION" sheet that is enclosed in the program box.
You'll find further information in the article about the ESSENTIAL PRODUCT LICENSE INFORMATION sheet and in the instructions for Activation & Reactivation.
Please note that an 'All Applications' license cannot be deleted. As soon as the full version license has been successfully activated, you can ignore the temporary license and use your software even after the 'All Applications' license has expired.