Popup Pro open when user clicks a button

Hi

What I want to do is open a popup from a button in a widget position when a user clicks on it. I've already set Appear when user clicks on a CSS selector and added the word donate.

In the text widget i have:
DONATE<i class="fa fa-heart-o" style="" id="donate"></i>

I can't seem to get the popup to launch at all. What could I be doing wrong?

Thanks guys!