we keep getting this message: Please advise
Please check your server that handles PayPal Instant Payment Notifications (IPN). IPNs sent to the following URL(s) are failing:

[gist type="php"]
https://iaate.org/index.php?option=com_payplans&gateway=paypal&view=payment&task=notify
[/gist]

If you do not recognize this URL, you may be using a service provider that is using IPN on your behalf. Please contact your service provider with the above information. If this problem continues, IPNs may be disabled for your account.