Paypal checkout works, payment is not pending, but immediately processed.
receipt email doesn’t go to spam
image size are in 320×320 px and downloadable (Test 320×320)
receipt mail contains two links to an empty page:
http://www.salsa-trips.com/wp-content/plugins/image-store/admin/download.php?_wpnonce=7fa56a5fe5&img=c999d5b633c7&sz=Test%20320×320&c=color