I read various topics discussing failed IPNs for the Fundraising plugin, but found no answer...
We received a donation via our Fundraising project yesterday, and got the notification from Paypal, but the gift has not posted in the plugin admin, nor has our progress bar updated.
Upon further investigation, I notice the IPN has failed to reach our site. Paypal reports the following:
Notification URL: http://tripawds.org/wdf-payment-return/paypal/
HTTP response code: 403
Delivery status: Retrying
No. of retries: 14
We received a donation last week and everything worked as it should. To my knowledge, nothing has changed on the server that might cause the Forbidden error for the IPN. We're running current versions of WordPress and the Fundraising plugin, and no new plugins, themes, or admin/settings changes have been added recently.
Since the notification URL is apparently not an actual file on which I can check permissions, how might I determine the cause for this failure? When I load the URL directly, a blank browser window displays with no errors and the Firefox console reports a "200 OK" HTTP response.
Thanks in advance for any help!