With the default theme active, and ONLY Gravity Forms enabled, the CAPTCHA appears as expected. This is on the newsletter-sign-up page.
With the default theme active, and ONLY Gravity Forms and WP Responsive Menu Pro enabled, the iframe that contains the “I’m not a robot” check box is not visible, though the label “CAPTCHA” still is.
With the default theme active, and ONLY WP Responsive Menu Pro enabled, the menu is not visible on any page.
Thank you for your time.