Each single license for every product is strictly limited to one (1) production website. In order to use a product on more than one website, additional licenses must be legally purchased. You can, however, install the product on as many testing/development environments as you need. You are allowed to use the source code and modify it with the sole purpose of enhancing it to make it better fit your needs. It is strictly forbidden to:
Nemo’s Post Scriptum reserves the right to refuse permission to use the product for any reason, and without notice.
The license also grants you full free support on bug fixes for all of the products with no time limit, plus a lifetime “free upgrades” on all future updates for every product.
You can contact the customer service to clarify any doubt about your specific needs.