i am using ccavenue in my prestashop store Version 1.2.5.0. My problem is after successful credit card transaction, when coming back to website, shopping cart items are not clearing and also orders are not updating. I am using CCavenue Payment Gateway developed by bluezeal.in. In merchant account settings I have given Return Page URL as http://myshop /modules/ccavenue/validation.php where I am updating my order table. And in ccavenue.php page I have given my return url as $Url ='http://'.htmlspecialchars($_SERVER['HTTP_HOST'], ENT_COMPAT, 'UTF-8').__PS_BASE_URI__.'modules/ccavenue/validation.php'. After successful transaction ccavenue is not returning anything to my validation.php page. Ie, AuthDesc, Order_Id etc
This problem got solved after regenerating key in merchant account settings..