I'm first time developer, trying to get the very basic App proxy set up.
I've created an app, added app proxy for it:
Installed app proxy to the test store:
However, when I go to: https://smart-customer.myshopify.com/a/customer
I get 404. I've checked the logs of the App that I deployed and nothing happens. However, when I manually go to the App url, the logs get created and I can see the response.
I haven't changed the App proxy url and, on the heroku app, I've made the router match any url request, just to be sure, but still nothing gets hit.
What am I missing?