Refresh on form submit

After a form submit (which does not validate) the session value will be invalid and you will not be able to submit the form (after filling all required fields). To fix this the grecaptcha.reset() should always be called on submit. More info here: https://developers.google.com/recaptcha/docs/verify “If your website performs server side validation using an AJAX request, you should only verify the user’s reCAPTCHA response token (g-recaptcha-response) once. If a verify attempt has been made with a particular token, it cannot be used again. You will need to call grecaptcha.reset() to ask the end user to verify with reCAPTCHA again.” https://wordpress.org/plugins/ninja-forms-recaptcha-field/