As per @michael_vetter's post in an older thread, our Power Automate flows stopped being triggered at about 00:00 UTC yesterday (9th October). I've created a new thread since this seems like a new issue.
We're not seeing any of the symptoms we saw with the previous trigger issue. The webhook still shows as Active on the ArcGIS REST Services page and the Notification Status table is empty.
The problem occurs both on our existing webhooks which have the "Response 200" workaround applied. These use the "When a record is updated in a feature layer" and the "When a record is created in a feature layer" webhooks respectively. It also occurs on new flows we created yesterday to try to debug the issue.
These flows should have been triggered 100+ times since yesterday but have not been triggered at all.
Currently it's only been reported by @michael_vetter and ourselves.
We saw some 503 errors before they stopped working. Other users have been getting 503 errors but their webhooks are still working.
Any thoughts on what we can try or how we can debug this @AnthonyLatini ?