Thank you! I read the first link, as I’m using the free version. I will have to look into the pro version. Honestly didn’t know you had that until today. I love the plugin 
Since I’ve upgraded, is network activation necessary in order to protect subsites? If I’m understanding this properly, that sounds right. I’m just making sure. Before, I’ve just had the plugin activated on the primary site and that’s all. Now if I want to protect subsites, I should network activate the plugin. Correct?