We've started receiving webhook updates and bots are responsive again. We'll keep monitoring the situation.
Posted Jun 06, 2019 - 10:04 UTC
Investigating
We've stopped receiving webhook updates from Facebook leading to bots not responding to user messages. We'll update the incident as soon as we receive any information from Facebook. You can also track updates here: https://developers.facebook.com/status/issues/2298401886902830/