In the email you received your product, you should have also received the license files. These files have the format xxxxxxx.mflic. Save this file to the machine where they must be installed.
Log in as root, open the License Administrator and select option 4:
Enter the path where you saved the file and the license will install:
Enter option 2 to check that the license is listed:
To uninstall a license, enter option 5 from the main menu and select the product you wish to uninstall.