On the 22nd of January at 12:18 UTC Turn version 4.0.31 was released and automatically deployed. Unfortunately this version introduced a bug which impacted numbers using a direct WhatsApp integration and relying on webhooks for service delivery, such as your account.
In Turn, webhooks can be configured to be notified of inbound messages, outbound messages, or both.
The result of this bug was that inbound messages were routed through to webhooks configured for receiving outbound messages. Any webhooks configured to receive inbound messages did not receive these messages unless that webhook was also configured as a recipient of outbound messages.
At 10:43 UTC on the 23rd of January we were notified of this bug and a fix was deployed at 12:16 UTC on the same day in Turn version 4.0.34
For the duration between when the bug was introduced and when it was resolved, the Turn application and UI was online and functioning. What was impacted was the routing of messages to webhooks configured as recipients of inbound messages.