Using hook WPCF7_before_send_mail in my own plugin, but form is not resetting.

Hello. I hope someone is able to solve this issue with me. I have written a custom plugin that hooks CF7 using the wpcf7_before_send_mail hook, retrieves the form data, and then uses cURL to POST to our Salesforce “Web-to-Case” system.

The plugin does everything correctly except one thing. The form just “hangs” and does not reset the form after submission. I feel like my plugin is interrupting the AJAX code to reset the form, but I am lost on finding a solution.

Here is the URL: https://www.magicinkjet.com/products/dmibop/ (You need to click the “Request a Sample” button on the left of the page to open the form.)

Here is my plugin code (I’ve removed sensitive data in my code.):

add_action( 'wpcf7_before_send_mail', 'web_to_salesforce' );

function web_to_salesforce($cf7) {

  $submission = WPCF7_Submission :: get_instance() ;
  $wpcf = WPCF7_ContactForm :: get_current() ;

  if( $wpcf->id == 47 ){ // 47 being the id of the CF7 form

      if (!$submission) {
        return false;
      }
    
      //$mail = $wpcf->prop('mail');

      $posted_data = $submission->get_posted_data() ;

      // assign CF7 fields to PHP data variables
      $url = 'https://webto.salesforce.com/servlet/servlet.WebToCase?encoding=UTF-8';
      $fields = array(
          'debug'       => 1, // set to 1 to active debug mode
          'debugEmail'  => '[email protected]',
          'orgid'         => '0xxxxxxxxxxxxxx',
          'recordType'  => $posted_data['Case-Record-Type-ID'],
          'subject' => $posted_data['subject'],
          '0xxxxxxxxxxxxxx' => $posted_data['brand'],
          '0xxxxxxxxxxxxxx' => $posted_data['referral-source'],
          'priority' => $posted_data['priority'],
          '0xxxxxxxxxxxxxx' => $posted_data['product-name'],
          '0xxxxxxxxxxxxxx' => $posted_data['company'],
          '0xxxxxxxxxxxxxx'  => $posted_data['first-name'],
          '0xxxxxxxxxxxxxx' => $posted_data['last-name'],
          '0xxxxxxxxxxxxxx' => $posted_data['title'],
          '0xxxxxxxxxxxxxx' => $posted_data['phone'],
          '0xxxxxxxxxxxxxx' => $posted_data['email'],
          'email' => $posted_data['email'],
          '0xxxxxxxxxxxxxx' => $posted_data['dealer'][0],
          '0xxxxxxxxxxxxxx' => $posted_data['Have-a-dealer'][0],
          '0xxxxxxxxxxxxxx' => $posted_data['address1'],
          '0xxxxxxxxxxxxxx' => $posted_data['address2'],
          '0xxxxxxxxxxxxxx' => $posted_data['city'],
          '0xxxxxxxxxxxxxx' => $posted_data['state'][0],
          '0xxxxxxxxxxxxxx' => $posted_data['zip'],
          '0xxxxxxxxxxxxxx' => $posted_data['Country'][0],
          '0xxxxxxxxxxxxxx' => $posted_data['Province'][0],
          'submit' => 'Submit'
      );

      curl_send_to_salesforce($url, $fields);

      

          return $cf7;
  }

}

function curl_send_to_salesforce($url, $fields){

  // URL-ify the data for the POST
  $fields_string = http_build_query($fields);

	// Open connection
	$ch = curl_init();

	// Set the url
	// Set the number of POST vars
	// Set the POST data
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Connection: keep-alive',
    'Cache-Control: max-age=0',
    'Upgrade-Insecure-Requests: 1',
    'Origin: https://www.magicinkjet.com',
    'Content-Type: application/x-www-form-urlencoded',
    'User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0)',
    'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
    'Sec-Fetch-Site: cross-site',
    'Sec-Fetch-Mode: navigate',
    'Sec-Fetch-User: ?1',
    'Sec-Fetch-Dest: document',
    'Referer:https://www.magicinkjet.com',
    'Accept-Language: en-US,en;q=0.9'
  ));
  curl_setopt($ch, CURLOPT_FAILONERROR, true); // Required for HTTP error codes to be reported via our call to curl_error($ch)
  curl_setopt($ch, CURLOPT_HEADER, TRUE);
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

  // Set data to be posted
  //curl_setopt($ch, CURLOPT_POST, count($fields));
  curl_setopt($ch, CURLOPT_POST, TRUE);
  curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);

	// Execute post
  $result = curl_exec($ch);

 	// Close connection
  curl_close($ch);

  return $result;
}

Any assistance would be greatly appreciated! I’ve spent almost a week troubleshooting this issue and I haven’t found a solution.

The page I need help with: [log in to see the link]