Problems with notification emails

I have installed Affiliates Pro for Woocommerce and it seems to be working great. However I’m having a couple of problems with the notification emails.

1. Affiliates receive a referral email even when a sale is not complete.
This most recently happened when a customer’s payment failed through Paypal. Here is the error message that appears in the Order Notes:
“PayPal Pro payment failed (Correlation ID: xxxxxxxx). Payment was rejected due to an error: (15005) “This transaction cannot be processed.” Order status changed from pending to failed.”
The customer received the regular referral notification message, even though the order never went through.

2. I (as the administrator) am receiving double notification emails for each referral. For a single affiliate sale, I will receive two notifications at exactly the same time. I have checked my settings in the Notifications section and everything looks OK.

Here are the settings that I have in the notification section:
Enable Notifications – CHECKED
Notify the site administrator – CHECKED
Accepted – CHECKED for administrator
Pending – NOT CHECKED for administrator
Notify the affiliates – CHECKED
Accepted – CHECKED for affiliates
Pending – NOT CHECKED for affiliates

We have WordPress 3.7.1, Affiliates Pro 2.4.2 and Affiliates Woocommerce Integration 1.3.4.

This is a really useful piece of software, but any help with these two issues would be greatly appreciated!

Thanks
J