All Strasis Systems purchased license plans require a key.  The key is provided at the time the product is purchased and has the form

{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}

For example, you may receive an email with a key like this

{C1CF4BEC-2433-4162-BA43-BAF6D2932983}

To activate your product, select ABOUT -> LICENSE from the main menu or console (if one a console, you must be logged in for this item to be enabled).  If the product is already enabled, then no action is required.  However, if you are upgrading from the freeware or lower level license, simply copy the key into the box labeled "license key", supply your email address used to purchase the key and press activate. You must have an active Internet connection during this phase for the activation to succeed.

Once the product contacts the Strasis Systems license server and installs the proper encrypted license, your product will be activated and the state will update in the dialog as well as other locations within the product.  You will also receive an email with additional information regarding your activation to the email supplied.