1) Go to your account> Services> My Services
2) Select your licesing module from the list
3) Copy your license key
4) Download the module file and upload it to your main WHMCS directory
5) Open in the module directory (license_rename.php) and enter your key in "xxxxxxxxx"
6) Save the file as license.php in the module directory
7) and the last step> Activate your module via the Addons Manager in WHMCS
