Please locate the original email that you received when you first ordered the StockUnlocks Pro plugin for WordPress. There you will find the original:
License email: The email address related to your purchase.
License key: A unique key linked to the License email address.
Enter the values in the appropriate fields above in order to renew your existing license.
Once your payment has been processed, you will receive an email containing the same license information as last year (PLEASE check your junk/spam folders of your PayPal email address if support at stockunlocks dot com is not in your address book!).