reCAPTCHA v3 does not work

The v2 reCAPTCHA is added to the form using the v2 reCAPTCHA field. The v3 reCAPTCHA is added to the form via the v3 reCAPTCHA action.
https://ninjaforms.com/blog/how-to-easily-add-recaptcha-v3-to-your-wordpress-form/

Thank you for your clarification! Maybe this info belongs directly in the settings? That the reCAPTCHA integration in the contact form changes so much is currently not apparent there.