I am having a problem integrating PayPal with Sitefinity Ecommerce's Checkout widget. I have followed all the steps in Sitefinity's documentation (http://docs.sitefinity.com/use-paypal-payments-standard-payment-processor) to set up a test configuration.
When I select the PayPal radio button during the checkout process, nothing is displayed. The Payment Method is set up according to the doc. The PayPal sandbox account is a business account with IPN and Payment Data Transfer both set on.
I am running Sitefinity version 8.0.5703.0 Standard Edition.