Can't connect to firebase auth emulator

I successfully had the firebase auth emulator working a few days ago, but it has mysteriously stopped working. I get a generic network error when trying to authenticate with any platform. I am using a physical device via USB. When I navigate to the emulator address and port on the device, I get the appropriate json response, so I think the connection should be fine. Authentication without emulator is working.

I have this in my application launch

func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
    FirebaseApp.configure()
    Auth.auth().useEmulator(withHost:"192.168.0.10", port:9099)
    
    let settings = Firestore.firestore().settings
    settings.host = "192.168.0.10:9098"
    settings.cacheSettings = MemoryCacheSettings()
    settings.isSSLEnabled = false  // required when pointing to emulator
    Firestore.firestore().settings = settings
    
    return true
}

I also have this firebase.json configuration

{
  "firestore": {
    "database": "(default)",
    "location": "nam5",
    "rules": "firestore.rules",
    "indexes": "firestore.indexes.json"
  },
  "emulators": {
    "auth": {
      "port": 9099,
      "host": "0.0.0.0"
    },
    "firestore": {
      "port": 9098,
      "host": "0.0.0.0"
    },
    "ui": {
      "enabled": true
    },
    "singleProjectMode": true
  }
}

I tried adding this path as well

export FIREBASE_AUTH_EMULATOR_HOST="192.168.0.10:9099"

I have cleaned my build, deleted the app from my device, cleared derived data.

Thoughts on what else I should check?