How to Update Your License Key
If you need to update your key from a trial version key to a paid license key or switch your key to a different key simply update the license key file with your new key by running the following command in ssh then following the directions in the license key file:
nano /usr/local/cpanel/whostmgr/docroot/cgi/zamfoo/zamfoo_reseller_license_key.php
Make sure you follow the directions in the key file to save the file correctly and exit back to the linux command prompt.