ThemeForest offers a single license and an extended license.
With the single license, it means that you only need to buy one license for every website that uses Superhero. For example, if you choose to build 4 websites with Superhero, then you must acquire 4 single licenses.
The extended licenses operate the same way, but the difference is that you can re-sell it as an end product.
Your requests will be handled by an advanced ticket system that is limited to answering questions regarding problems with the theme or theme features. We do not provide support for third-party plugins or code customization. If you need help in that direction, then you should get the help of a developer.
Read everything on this subject on the Envato website.