Does this plugin supports multisite?

Hi,

I have a WordPress multisite environment setup and would like to purchase this plugin for some of my customers. I tried to see if this plugin can support a multisite setup but can’t find any information. Would you let me know how this plugin works under a multisite environment? Should it be activated networkly or site by site? And how the number of websites is counted, is it counted by different domains?

Thank you,
Lisa Jong