Purchasing any Plugin or Module, you also get a License. This unique key allows your system to receive the latest product updates and you also get a premium client support.
Each License is unique -> can be used only for one system. Make sure not to disclose your License key to unauthorized people.
Licenses for Modules are set up in the Settings -> Licenses
License for the main system (ESR/EER) is set up in the Settings -> Licenses
