If you are using a multi-site installation, you will need to put the license key into the Settings on the main network site. Under Events –> Settings there will be a tab that says License Keys. Enter the key there, and it should work for the sites in the network. Does that answer your question?
Hi, ripanti. As it’s been quite a while since your last reply, I’m going to close this thread. Please open a new one if you choose to pursue this further in the future.