Symptoms
Paypal redirect payment is left in the Hold status. Processing Status is Declined by Gate with Last E-Transaction
Wrong Payment Receiver Email for #ID in notification.
Cause
Business and receiver_email parameters (that can be seen in the notification sent from PayPal, in the generic_worker.log) do not match.
Resolution
For correct processing the values of the mentioned parameters should match. business parameter is set in Home -> System -> Settings -> Payments Processing -> PayPal -> e-mail address. receiver_email is set in PayPal account settings.