Unable to trigger webhook via Google Push Pub/Sub

I have set a webhook trigger for my flow (and a script as well during debugging) and I am able to trigger it just fine via curl. I am also able to receive google pub/sub push notifications when I place a webhook via a testing service called webhook.site. However the moment I place my windmill webhook url (token in query) I do not receive the notifs on windmill. Not even a trigger.