Slack integration only worked on first test

We added Wonderchat to slack and send it a test message.

It responded without issue on the first message, but all subsequent messages after that got no response.

We tested in several other channels and did not get any further responses in those either, only the 1 response in the first channel it was added to.

https://cdn.e8.co/Support/S3Images/6cbbfe2a81fa40fb706b0839bb225f5f.png