To the right of the SonicWall on which you are applying licenses, click the Licenses icon this will open a new popup window.
Click the Key icon to the right of the service you are trying to activate.
Enter the 8-digit Activation Key in the pop up window and click Confirm.
NOTE: For node based subscriptions (client or user count based services) or Email Security services users are presented with two options Renewal (default) and Upgrade (add licenses). If adding new services please select Upgrade (which increases node count).
Complete: Your activation key should now be successfully applied and your service should show activated.
CAUTION: Multiple activation keys can be applied at once but please ensure only keys meant for this feature, on this serial number are applied.