Why am I seeing ‘No such app’ if I access my application’s SSL endpoint address?

Resolution

The Heroku routing layer uses the Host header from the client to ensure the correct application responds to a request - this needs to be set to the value of your custom domain (if you have one set up) to route to the correct application. As a result you cannot access your application by visiting the herokussl.com that is assigned to your SSL endpoint. You need to set up a custom domain to access your application via the SSL Endpoint.