Hi there,
Sorry for the late reply. We didn’t receive any notification of your last questions.
Regarding the first question, the license key is to get automatic updates for the plugin. First, you would need to install the WPFactory Helper plugin. After installing the plugin, please navigate to Dashboard > Settings > WPFactory. The plugin should be listed there. Then you should paste the key into the WPFactory Helper plugin, and you will start to receive automatic updates.
Regarding the second question, we are still working on the documentation. But if you have any question about the plugin, you can ask here.
Kind regards,
Moshtafzur