I was testing the simple payment with PayPal and got an error message after paying at PayPal and clicking the link to return to my site that simply said there was a problem with PayPal and to try the payment again later. Problem is that the payment succeeded (I checked PayPal on both the sending and receiving end) and Exchange marked the purchase paid. The item I purchased showed up in my account under purchases. Unfortunately, it also remained in my shopping cart.
I tested ANOTHER purchase and got the following error when I clicked "Pay with PayPal":
- Error processing PayPal form. Missing valid PayPal information.
How could it be missing valid PayPal information when the previous transaction completed correctly, except for the false error message and emptying the shopping cart?
There is another, minor, problem. The "Pay with PayPal" button is duplicated on the product pages and the checkout page.