A: Hello elinn78 - Yes, the plugin works on multisite - Each site uses a single license, so you would need a license that fits the amount of sites you have. You can choose to delegate license handling to each website or you can handle all licenses on the multisite as superadmin. More details here if you need: https://wpsecurityninja.com/docs/account/does-the-plugin-work-with-wordpress-multisite/ and feel free to ask way here also.