Lightning includes 7 trial days right after installation without need to do any activations.
After that you will need to purchase license in order to continue using Lightning.
Lightning license costs $99 per domain and is one-time-and-forever fee.
Single license allows to use Lightning on all subdomains and multistore domains and includes all future updates.
License is purchased from Lightning widget in your admin area.
Important: License domain change is not allowed, for another domain you need to purchase another license.
Due to OpenCart Lightning 7-days free trial period, no refunds are allowed.
Please make sure that Lightning works properly and fits your needs before license purchase.
Nice to hear that!This info will be shown more often to another people.
Go to Support Section