Thanks for the feedback, this is correct functionality of the V3 reCAPTCHA. It is to help improve conversions and will automatically detect if the user is a spammer or not (no need to select “Check this box”). However, there seems to be a problem in verifying the reCAPTCHA.
Would you mind linking me to your site where I can run a test on this? I had a look at the site mentioned in your initial response but see that reCAPTCHA is not enabled on your domain.
Please also note that any other JavaScript error may cause a malfunction here as JavaScript errors cause a ‘chain reaction’. I noticed a JavaScript issue on your home page of ‘Uncaught TypeError: Cannot read property ‘querySelector’ of null’.