Directing to nested URL with react router from server

I am building an app with django3.2 and React 17 using react-router-dom 6.

My react app is served at https://www.example.com/

And if I navigate within the app to https://www.example.com/auth/signup I get the form, however, if I input the url directly into the browser I am taken to a blank page.

In my django.urls, I have a catch all that should send the path down to my react app, and in local development it works great.

urlpatterns = [
    ...,
    re_path(r'^(?:.*)/?$', homepage),
]

PROBLEM: In production I am taken to a blank page.

I suspect it has to do with relative paths in production. I've followed these questions:

Django static file serving in conflict with React Router

React router not loading dynamic url in production

And so far have tried:

1. Adding "homepage": "https://www.example.com/" to my package.json.
2. Adding <base href="/" /> to index.html
3. Adding "homepage": "." to package.json

But so far nothing has worked, and I need this feature, particularly for email verification. Happy to clarify anything or share front end code.