I'm already using IPN for the s2member plugin. In the Gravity forms Paypal documentation it says “If IPN is already enabled, you will see your current IPN settings along with a button to turn off IPN. If that is the case, just check the confirmation box on the Gravity Forms PayPal settings page and you are ready to go!”
BUT the notification URL is not the same as the one supplied in the documentation. Is this an issue?