Why is my ESET trial product license expired?

I installed the trial version of my ESET product and I purchased the full version but my product still says it is expired.

When you purchase the full version of your ESET product, you will be issued a license that is sent to the email address you enter during the purchase process. You need to activate your product with your new license.

Upgrade my ESET product from the trial version to the full version


Trial product license

If you download and install your ESET product and opt for a trial activation, you will receive a trial license valid for thirty (30) days. You will receive detection engine and module updates while your trial license is valid. At the end of the trial period (30 days), your ESET program will stop downloading detection engine and module updates. At this time you will need to purchase a license and activate your product with the new license to stay protected.