New Webhook Events get "Pending" state

[Selada]

I've been using paypal events for some weeks in sandbox environment. Since yesterday (May-17), all new events (e.g. Invoice created, Invoice paid) get the state "Pending" and the webhook is not called anymore. I'm using the same webhooks than before and have validated they're working.

I cannot find the reason for this. I've searched within the community and all over the Internet, I find old similar reports, but never an explanation or conclusion. Please help me.

The Merchant ID of my personal account is JQ7EAUG52T47C.

Event list in https://developer.paypal.com/developer/dashboard/webhooks/sandbox/:

Example of a successful call (inside detail of event):

"transmissions": [
{
	"webhook_url": "<a href="https://enc23dtgl0idw.x.pipedream.net/" target="_blank">https://enc23dtgl0idw.x.pipedream.net/</a>",
	"response_headers": {
		"Access-Control-Allow-Origin": "*",
		"Connection": "keep-alive",
		"Content-Length": "16",
		"Date": "Mon, 13 Ma[Removed. Phone #s not permitted]GMT",
		"x-pd-status": "sent to primary",
		"Content-Type": "application/json; charset=utf-8",
		"X-Powered-By": "Express"
	},
	"transmission_id": "18d6fee0-7599-11e9-ae95-c5194f6bfd7b",
	"status": "SUCCESS",
	"timestamp": "2019-05-13T16:06:41Z"
}]

Example of recent unsuccessful cases (inside detail of event):

"transmissions": [
	{
		"webhook_url": "<a href="https://enc23dtgl0idw.x.pipedream.net/" target="_blank">https://enc23dtgl0idw.x.pipedream.net/</a>",
		"transmission_id": "089c52d0-7983-11e9-ae95-c5194f6bfd7b",
		"status": "PENDING"
	},
	{
		"webhook_url": "<a href="https://webhook.site/3f28824b-3a64-4c7b-b4af-cac484dbf4e1" target="_blank">https://webhook.site/3f28824b-3a64-4c7b-b4af-cac484dbf4e1</a>",
		"transmission_id": "089f3900-7983-11e9-ae95-c5194f6bfd7b",
		"status": "PENDING"
	}
]

Thank you very much!

[Selada]

After three days struggling with this, with a demo with the client failing miserably, paypal announces is having problems with webhooks in sandbox:

https://www.paypal-community.com/t5/Sandbox-Environment/ALERT-Webhooks-Are-Not-Being-Delivered/m-p/1...

Nevertheless, the services status page states everything is OK.

I wish the community/customers were properly informed and on time.

[leugimblake]

thanks for the information, i've the same problem at 13/06/19