What do you mean by there was no good sign? Did you make sure to upload the updated page to the server? When you are redirected to the pp_checkout_failure.php page, the full request sent to PayPal and the full request sent back from PayPal should be displayed on the page. Can you attach the updated page so I can take a look at it? 
I had added the code given to pp_checkout_failure. But there was no full request sent back to my site. I dont have any Idea what to do next. Please advise me:( thanks


