Your license key is valid for one year (Personal | Freelancer | Business) or 1 month ( Basic ) from the purchase date. An active license key is needed for continued access unlimited lookup, and may be used for the automatic updates, security patches, bug fixes, new features and support.
If you forget to renew the plugin it will continue to work, however you will be limited in the 300 lookup per day and missing out any new features. You will also loose access for any support should you run into any issue.
