@cableman, thanks for the info… debug file empty means the plugin is not receiving the payment notification from PayPal (the plugin won’t email the product out unless it receives payment confirmation from PayPal).
So this is the issue we need to investigate and fix (you can spend 100s of hours trying to get the email going but it’s not gonna help unless we identify why PayPal isn’t sending payment notification).
Here are the next set of questions:
1) Do you have the “Email Notification & Digital Product Delivery” checkbox in the settings menu checked? If this option is not checked then the plugin won’t tell PayPal to send IPN (Instant Payment Notification) to the plugin.
2) If #1 is not the issue then I have a feeling your site is blocking IPN from PayPal. There can be two reasons for this:
a) Your server has a firewall that is blocking PayPal’s IPN
b) You have a plugin that is blocking PayPal’s IPN (Bad behavior plugin one such pluign known to do this)
Please post a link to the page where you are using this plugin and I will be able to confirm #2 for you.