HELP - Enabling CAPTCHA on a Form

Sara@Peer Seattle
edited 12/09/19 in Smartsheet Basics

I have a business critical form that's getting spoofed (500+ entries in ~3hrs) and am trying to enable CAPTCHA but I can't seem to get it on the form. 

Here's what I've done using Edge and Firefox:

Edit form > Form Options > Checked 'Enable challenge/response for additional security'