Accessing GUI of kivvy App remotely

I am working on an application that is a fork of this example code: farm-ng/camera-streamer-kivy. I am running Brain OS version 2.3

I’ve gotten the app to work and display on the brain’s screen, however, when I am working on this application remotely, I cannot see the GUI that is being displayed. I.E. It does not show up on the HTTP connection even though it does display on the physical brain screen. I’ve seen in some discussions here that you can specify a port for the GUI to be served over http, however, when I add the app_route field to my manifest.json file, nothing is being served on the port I specify.

What could I be doing wrong here?

Thanks in advance.