AdLinkFly uses ionCube to protect some PHP files, mainly the files for license verification. This helps stop people from sharing the script without permission. It protects customers who buy valid licenses, and it protects the work behind the product.
If unlicensed copies were widely distributed, they could be used to operate many unauthorized websites. That would be unfair to licensed customers and would reduce the resources available for future development, updates, and support.
You can still install and configure AdLinkFly, create full or child custom themes, and modify files that are not encoded. The protected files must remain unchanged, and the server must have a compatible ionCube Loader to run them.