Pingdom integration

Question

im trying to integrate Pingdom into Teams, ive tried the app (https://appsource.microsoft.com/en/product/office/WA104381605)) but it doesn't show to allow me to create a connector, and ive tried using an incoming webhook. I have tested the web hook and it is sending valid json but it won't appear in the channel. on manual testing it shows:

Summary or Text is required.

the same data posted to a Slack web hook works as expected so this is a Teams specific issue