In order to use the reCAPTCHA anti-spam field you will first need to retrieve the site and secret keys from the reCAPTCHA site and add them in the general configuration of your form.
Step 1. Access your account on the reCAPTCHA site
The first thing you need to do is access your account at the reCAPTCHA anti-spam site.
Step 2. Register your site
You can start registering a new domain for the service by clicking the + button.
Step 3. Copy the site and secret keys
After registering your domain you will need to copy the Site and Secret keys in the form configuration Kali Forms > All forms > select your form > Settings > Spam protection .
As simple as 1,2, 3, if you have any further questions please let us know through our contact form.