EventBridge receives no events

I have configured an event stream with a webhook, and that seems to work fine. I am trying to replace it with an eventbridge stream, for resilience in the face of outages and errors.

However, the events do not arrive in the bus. I have attached an archive to it, and it remains empty. The account number and region match what’s in the default event bus ARN.

Any gotchas here?

I should note that the stream is configured for any user event, and I am testing with test events.