To renew an Add-in or Connector license nearing its expiry, simply purchase a new license key for that product and enter the code in the License wizard. Your original expiry date will be extended by a year. That’s it!
Open the License wizard on the ribbon bar (the image may vary depending on the status of your licenses). Click on the entry for the product you purchased, enter the License Key in the space provided and click Activate. A popup will notify you that the license was activated and show the new expiry date.