Robot warning page

Since a couple of weeks I am suddenly getting this robot warning page almost every time I open one of my websites:
https://www.dropbox.com/s/6i5bo610yrefldp/robot%20warning%20page.png?dl=0
I use wordfence on all of them, and am wondering if this Robot warning page is generated by wordfence or by something else. If it is generated by wordfence, what can I change in the settings so that it does not pop up all the time?

The page I need help with: [log in to see the link]