In have enabled recaptcha from config.inc.php and getting this error “You did not pass the validation check used to prevent spam submissions.” Please Guide …

In your PHP configuration (php.ini or equivalent) the directive allow_url_fopen has been turned off. For OJS to be able to verify the ReCAPTCHA response, it need to be able to make a direct connection to Google over HTTPS. This is implemented via an fopen call to a Google URL. If your system admi…