Почему redux не работает?

import { addUser } from "../../store/actions/index";

const mapDispatchToProps = dispatch => {
  return {
    onAddUser: (email, password) => dispatch(addUser(email, password))
  }
};

export default connect(null, mapDispatchToProps)(Auth);

import { ADD_USER } from "./actionTypes";

export const addUser = (email, password) => {
  return {
    type: ADD_USER,
    email: email,
    password: password
  }
};

import { ADD_USER } from "../actions/actionTypes";

const initialState = {
  username: '',
  password: ''
};

const reducer = (state = initialState, action) => {
  switch (action.type) {
    case ADD_USER:
        return {
          ...state,
          user: {
            email: action.email,
            password: action.password
          }
        }
      break;
    default:
      return state;
  }
};

export default reducer;

import { createStore, combineReducers } from "redux";

import usersReducer from "./reducers/users";

const rootReducer = combineReducers({
  users: usersReducer
});

const configureStore = () => {
  return createStore(rootReducer);
};

export default configureStore;

import configureStore from "./src/store/configureStore";

const reduxStore = configureStore();

// Register screens
Navigation.registerComponent('remote-control.AuthScreen', () => (props) => (
  <Provider store={reduxStore}>
    <AuthScreen {...props} />
  </Provider>
), () => AuthScreen);

import React from "react";
import { AppRegistry } from "react-native";
import { Navigation } from "react-native-navigation";
import App from "./App";
import { name as appName } from "./app.json";
import { Provider } from "react-redux";
import configureStore from "./src/store/configureStore";

const store = configureStore();

const RNRedux = () => {
  <Provider store={store}>
    <App />
  </Provider>
};

AppRegistry.registerComponent(appName, () => RNRedux);