How do we count unique active users of the plugin

The pricing of Topol plugin is based on the number of active users in a given month. 1 user corresponds to 1 userId set in the plugin configuration:

            authorize: {
                apiKey: "Your Api Key",
                userId: "User ID",
            },

Active users are counted and used for monthly billing purposes. Images and other files used in the template are associated with the userId and they will not be visible to other users. Usually, 1 user corresponds to one client of Your app, CRM, ESP…