Custom Domain Login Page - 404 Errors on Assets (SSL Working, Embed Working)

Environment

What's Working

What's Not Working

The login page at https://retool.my-domain.com/auth/login shows the UI but fails to load with 404 errors in the browser console:

Failed to load resource: the server responded with a status of 404 ()

The page displays "Welcome back. Log in to your account below." but the login form doesn't appear or function.

Questions

  1. Is there additional configuration needed for the custom domain login to work?
  2. Are there specific assets that need to be deployed for the custom domain?
  3. Should I retry the domain verification in Settings → General → Custom Domain?

Thanks for any help!