Hi Claudio, I just installed your plugin in my ecommerce... and I'm doing the sandbox test...
But it's not working well for me. When a costumer try to checkout any product, appears this message "An error has occurred while processing your payment, please try again. Or contact us for assistance."
And I really don't know what is causing this error... Could you please help me out with this?
This is the link to my website and the page on the checkout error: