I iknow some people don’t like these but I’m reviewing the option. However, and I have free registration on my website, I don’t quite understand the config. This is what it says:
s2Member Pro-Forms for Stripe, PayPal Pro and Authorize.Net (including Free Registration Forms) can be configured to use Google’s reCAPTCHA™ service (free). Just add this attribute to your Pro-Form Shortcode: captcha=“light”.
Well my registration log in is not a page but a WP url eg wp-login.php?action=register - so, not sure how I can add the shortcode anywhere useful and just to confirm the registration page doesn’t show any captcha.