I have a Rails Shopify App, not embedded.
If I use https://539135b3fake.ngrok.io the webhooks it work fine, but if I use
https://mydomain.herokuapp.com it does not work.
When i use ngrok host, webhooks arrive normally on my server.
When i use heroku host, do not arrive on my server and dont arrive failing webhook mail.
I found the root problem, according with this documentation:
The following URLS do not work as endpoints for webhooks:
In this case my domain herokuapp.com is not accepted