Hello,
IPN seems to be working OK on my site using the Sandbox; I can see a record of my test purchases in "Cart Orders".
I'd like to add some custom behaviour to the IPN - is that possible without hacking the plugin? If I do hack it, what will happen to my hacks when we upgrade the plugin?
We've spent a lot of time looking for a simple, flexible plugin, and I really like how this works. Adding some behaviour to the IPN would be the capstone of our edifice!
Thanks in advance for your help,
Ben
https://wordpress.org/plugins/wordpress-simple-paypal-shopping-cart/