When I have setup PayPal Express and it seems working OK.
But my client reported me that when customer changes mind and closes browser before confirming the order, those order seems to stay with PayPal.
For example, next day, when the customer visits the site and add an new item in the shopping cart, and then trying to checkout using PayPal Express, checkout process displays yesterday's order, which customer has thought would disappear after closing browser before the confirmation.
Is this a Zen cart configuration or PayPal configuration problem?
I would appreciate very much for any clue regarding this problem.