How to enable lightbox on click

Hey
I found that I can enable popup on button click as described here: https://voltroid.com/support/knowledge-base/chimpmate-open-on-click/

The problem is that I don’t have option “Enable on click” in Behavior so my popup doesn’t work when I click on button with #chimpmate-lightbox class.
All options in behavior setting are unchecked. If filters by page type are unchecked too then nothing happens and lightbox can only be shown automatically if some filters like “pages” checked. But I want lightbox to popup only on click.

Is it a premium feature or am I doing something wrong?

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