Well, I indeed tried the cancel link of paypal. But your screenshot red error was also for the cancel link.
If you want to fix the success link, you need to do a similar modification :
$return_url = HIKASHOP_LIVE.'index.php?option=com_hikashop&ctrl=checkout&task=after_end&order_id='.$order->order_id;
to:
global $Itemid;
$url_itemid='';
if(!empty($Itemid)){$url_itemid='&Itemid='.$Itemid;}
$return_url = HIKASHOP_LIVE.'index.php?option=com_hikashop&ctrl=checkout&task=after_end&order_id='.$order->order_id.$url_itemid;
If you can't add a product description, it's either:
- because you have a problem with the database structure. You should activate the debug mode of the joomla configuration and try again to see if you have an error message.
- because your HTML editor is not working properly. You should use another editor by changing it in the "editor" option of the configuration of hikashop.