Transaction Status is "Success" but Checkout Still Failing
My client has changed their PayPal account and since changing the $WA_PayPal_PayPal_API_Username, $WA_PayPal_PayPal_API_Password and $WA_PayPal_PayPal_API_Signature to the new account it no longer works while paying by credit card. I have added <?php echo(PP_ECO_Auth_Result("Full Response")) ?> to the checkout_failure.php page to try and determine the issue but it seems that the response is successful. Here is what is returned: 2016-06-06T21:50:17ZSuccess72c36c03829a063.022708556EC-4U739620607188018
What could be causing this?