If you purchased LiteSpeed and have a valid license, you can register LiteSpeed during the installation or upgrade, or any time:
Using the LiteSpeed UI Console (Help | License...)
note: This will only register a local copy of LiteSpeed
Using the LicenseInfoCmd command-line utility
If you want to purchase LiteSpeed or require a trial extension or have any other licensing questions related to your purchase please contact your sales representative or go to https://www.quest.com/company/contact-us.aspx.