We have a webshop, it works well, didn't make any changes, using Paypal standard and accepting payments, the customer can purchase products but the Paypal doesn't send an instant notification when the payment was completed so all orders are missing, the merchant doesn't know the pending orders but the customer is waiting for the product..... The last successful request was sent on 4 Sept by IPN. We have 6 pending transactions and their IPN statuses are "Retrying" but the HTTP Response code is empty. The web server log doesn't have any entry. I can make post requests to the shop in the console and works well. Nothing was changed in the webshop codebase. It seems something wrong about the Paypal IPN service, who could help me? When the IPN service will work again? How can we prevent that kind of issue in the future?
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