Activating a License Using a License Key
Before activating your license, ensure that your device is connected to the internet and you have signed in with your QNAP ID.
You can activate a license using a license key. After purchasing a license from QNAP Software Store, you can generate a license key from the License Manager website and apply the key in License Center. A license key contains 25 characters and always starts with the letter L.
For details, see Generating a License Key.