Have been receiving email from PayPal that IPN is not working. One off donations were updated but not recurring payments. I am on CiviCRM 5.16.4
How can I fix it please?
I have tried this but still not working anyone getting "IPN warning" emails from PayPal?
EDIT: Content of the email, also added a screenshot of the paypal IPN screen
Dear Tapash Datta ,
Please check your server that handles PayPal Instant Payment Notifications (IPN). Instant Payment Notifications sent to the following URL(s) are failing:
https://example.com/sites/all/modules/civicrm/extern/ipn.php
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.
Thank you for your prompt attention to this issue.
Yours sincerely,
PayPal