Redirect after end

-- url of the page with the problem -- : mybabylonia.gr
-- HikaShop version -- : 1.5.8
-- Joomla version -- : 2.5.4

Hi,
been trying to redirect users after purchase, and done some reading and suggestions I found on this forum and google results with no luck.
It just does not redirect.
What I'm trying to achieve is to redirect the users to a page so they can leave a testimonial after the purchase end.
Been trying to edit after_end.php with no luck.

My thought is to either redirect to the page /visitor-comments (or using menu item id) and display there the thank you message.
or
Keep it as is, display the thank you message as normal, and then 2 second later redirect them to the other page.

Any thoughts? Your help is appreciated

I tried this:

header( "refresh:2;url=visitor-comments" );

with no luck. I thought of it after trying all the options $app->redirect I found on some forum posts

using 3 different payment methods:
HikaShop collect on delivery payment plugin
HikaShop bank transfer payment plugin
Hikashop Modirum Payment Plugin

and
the url at the end is: mybabylonia.gr/en/component/hikashop/checkout/step/step-3
(when I use the collect on delivery payment option)

Can I have it so that it actually loads the current page, but a couple of seconds later it redirects? Or the best would be to go the the desired page, mybabylonia.gr/en/visitor-comments and display the results of the purchase there.

yes but that might be on the latest version of hikashop.
the version I'm looking at is 1.5.8
that's why I'm trying to do it using code.

Thanks for the reply.
at the moment my end view looks like this:

<?php
defined('_JEXEC') or die('Restricted access');
?>
<?php
if(empty($this->html)){
  echo JText::_('THANK_YOU_FOR_PURCHASE');
}else{
  echo $this->html;
}
$this->nextButton = false;

<?php
defined('_JEXEC') or die('Restricted access');
?>
<?php
if(empty($this->html)){
  	$app = JFactory::getApplication(); 
	$link = 'URL'; 
	$app->redirect($link);
	echo JText::_('THANK_YOU_FOR_PURCHASE');
}else{
  echo $this->html;
}
$this->nextButton = false;

that didn't work

Hello. Friends help. My order is issued so - basket - avtorizatsiya- address and end (ordering to the end) I need it because there is no payment module is not necessary. Now when the end - the order created and I see him in the bar but the completion of the order the client sees an error that the page can not be found It's ugly.How to make so that after completion of the order appeared window - message - thank you for your order? In other stores joomshoping example is there even without the payment module? Prompt where to look to do such a thing thanks :)HikaShop Business 2.6.1

Thank you for your help. I do appreciate it.
You've been helpful and I managed to redirect with your help. Tried it on some payment method and it worked. It should work the same in all the rest payment methods

Hi I tried to changed the checkout / after_end.php in Display --> VIEW and I selected the default template that I used .. but it still did not work..
What I did wrong?

<?php
/**
 * @package	HikaShop for Joomla!
 * @version	3.4.0
 * @author	hikashop.com
 * @copyright	(C) 2010-2018 HIKARI SOFTWARE. All rights reserved.
 * @license	GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html
 */
defined('_JEXEC') or die('Restricted access');
?><?php
$app = JFactory::getApplication();
$app->enqueueMessage( JText::_('THANK_YOU_FOR_PURCHASE') );
if(!empty($this->url))
	$app->enqueueMessage(JText::sprintf('YOU_CAN_NOW_ACCESS_YOUR_ORDER_HERE',$this->url));
$app->redirect('/index.php/complete-order');

?>

Thank you.. its End.php ... manage to do it.. thx alot