You have a 2 computer license key. Keep in mind that all plugins share that same key so if you activate a different plugin other than Face Crop on another computer then it will use one of the activation slots. So basically you can install all of the plugins on 2 computers. However, you can’t install Face Crop on 2 computers and then install EZ Team Builder on 2 different computers.
If you activations are maxed out and you try to activate you will also be given the option to deactivate all computers and you can start over on the activations.