This URL on your FAQ is less than helpful:
My WP db user is already set with full permissions. WordFence used to work several versions ago, but at some point it stopped saving so I uninstalled it. I decided to try it out again with the recent WP & WF updates, but alas, it is still not allowing me to save any of the options I set. This only happens on my multisite install. Everywhere else that I have a single WP install it works fine.
The scan started but got stuck after a while, I'll try the suggestions on the FAQ later when I have time, but I have to wonder if it is somehow related to the lack of ability to save on the options screen.
I would really like to add some additional protection on my site with your plugin, please advise.