When I test my checkout code using the production details the payments go through fine.
On clicking the "pay by paypal" button I have a dialogue which redirects me to my "transaction complete" or "cancel" page.
I want to be able to use sandbox credentials, as live sales have to be refunded etc.
I am finding the behavior or the popup difference. For example:
1. when clicking "cancel" I am redirected back to the site, within the popup. Instead of the popup closing and myself being redirected.
2. after the payment goes through, the popup hangs when sending me back to my site.
I suspect I have failed to configure my sandbox account correctly, but I cannot for the life of my work out what I have done wrong.
I would also suspect that the transaction would not occur at all, or not redirect me instead of trying to do it within the popup.
Any light you could shed on this would be greatly appreciated.
