This appears to now be fixed. Although if you use Pill it likely killed the webhook due to failures and will need to be recreated on their side. But I can now post data.

Starting this morning the webhook integration with my pill has stopped working. No changes were made. I've also verified the webhook address. I'm receiving the following error: Failed submitting data to remote service.WebHookId: d6408c52-b96b-4d7a-8127-dc8980681a21Device Id...