I've set up eshop for a client. When I try to order a product, I receive the following message : "The transaction was not completed successfully. eShop could not validate the order.The transaction was not completed successfully at Paypal. The pending reason for this is unilateral".
I did follow the wiki http://quirm.net/wiki/eshop/setting-up-merchant-gateways/paypal/ but it still doesn't work. However I've tried with a Paypal Sandbox account and it works fine. I guess I have a problem with the Paypal settings but I don't know which one cause the problem.
Any help will be appreciated.