I am testing payments through our system in the Sandbox and some (not all) transactions do not process and return back to the cart without any error message. There is not payment recorded in our application and no payment in the PayPal activities. I can retry the payment via the cart (using the same payment details) and it then works (though sometimes it takes up to 6 attempts) I do see a Payment notification in the Sandbox notifications for these failed attempts, but nothing in the activities. Has anyone seen this behaviour before and what can I do to prevent it? Cheers John
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