Here’s how you can set up the reCAPTCHA for the WPFunnels Optin Form.
1. Go to WPFunnels > Settings and click the Opt-In Settings tab.

2. Scroll to the reCAPTCHA Settings section and select Connect reCAPTCHA (v3).
You will see the fields for Site Key & Site Secret.

3. Go to Google reCAPTCHA and register your site. Then collect the site key and secret key.

4. Return to WPFunnels reCAPTCHA Settings, set up the Site Key and Secret Key then click on Save.

So that’s how you can easily add reCAPTCHA to your opt-in form.