diff --git a/admin-spa/src/App.tsx b/admin-spa/src/App.tsx
index 1226bb1..0041cfd 100644
--- a/admin-spa/src/App.tsx
+++ b/admin-spa/src/App.tsx
@@ -1,5 +1,6 @@
 import React, { useEffect, useState } from 'react';
-import { HashRouter, Routes, Route, NavLink, useLocation, useParams, Navigate } from 'react-router-dom';
+import { HashRouter, Routes, Route, NavLink, useLocation, useParams, Navigate, Link } from 'react-router-dom';
+import { Login } from './routes/Login';
 import Dashboard from '@/routes/Dashboard';
 import DashboardRevenue from '@/routes/Dashboard/Revenue';
 import DashboardOrders from '@/routes/Dashboard/Orders';
@@ -19,7 +20,6 @@ import ProductAttributes from '@/routes/Products/Attributes';
 import CouponsIndex from '@/routes/Coupons';
 import CouponNew from '@/routes/Coupons/New';
 import CustomersIndex from '@/routes/Customers';
-import { Login } from '@/routes/Login';
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
 import { LayoutDashboard, ReceiptText, Package, Tag, Users, Settings as SettingsIcon, Maximize2, Minimize2, Loader2 } from 'lucide-react';
 import { Toaster } from 'sonner';
@@ -441,7 +441,7 @@ function AuthWrapper() {
     });
 
     // In standalone mode, trust the initial PHP auth check
-    // No need for additional API call since PHP already verified the session
+    // PHP uses wp_signon which sets proper WordPress cookies
     if (window.WNW_CONFIG?.standaloneMode) {
       setIsAuthenticated(window.WNW_CONFIG.isAuthenticated);
       setIsChecking(false);
@@ -464,7 +464,7 @@ function AuthWrapper() {
   }
 
   if (location.pathname === '/login' && isAuthenticated) {
-    return <Navigate to="/dashboard" replace />;
+    return <Navigate to="/" replace />;
   }
 
   return (
diff --git a/admin-spa/src/lib/api.ts b/admin-spa/src/lib/api.ts
index 41cc36b..833ef90 100644
--- a/admin-spa/src/lib/api.ts
+++ b/admin-spa/src/lib/api.ts
@@ -9,7 +9,7 @@ export const api = {
     if (!headers.has('Accept')) headers.set('Accept', 'application/json');
     if (options.body && !headers.has('Content-Type')) headers.set('Content-Type', 'application/json');
 
-    const res = await fetch(url, { credentials: 'same-origin', ...options, headers });
+    const res = await fetch(url, { credentials: 'include', ...options, headers });
 
     if (!res.ok) {
       let responseData: any = null;
diff --git a/admin-spa/src/routes/Login.tsx b/admin-spa/src/routes/Login.tsx
index 14cd623..e44e166 100644
--- a/admin-spa/src/routes/Login.tsx
+++ b/admin-spa/src/routes/Login.tsx
@@ -37,6 +37,11 @@ export function Login() {
         window.WNW_CONFIG.currentUser = data.user;
         window.WNW_CONFIG.nonce = data.nonce;
         
+        // CRITICAL: Also update WNW_API.nonce for API requests
+        if (window.WNW_API) {
+          window.WNW_API.nonce = data.nonce;
+        }
+        
         // Redirect to dashboard (no reload needed, auth state is updated)
         navigate('/dashboard');
       } else {
diff --git a/includes/Api/AuthController.php b/includes/Api/AuthController.php
index 72ef2dd..b2a5cff 100644
--- a/includes/Api/AuthController.php
+++ b/includes/Api/AuthController.php
@@ -31,8 +31,14 @@ class AuthController {
 			], 400 );
 		}
 		
-		// Authenticate user
-		$user = wp_authenticate( $username, $password );
+		// Use wp_signon to properly authenticate and set cookies (same as wp-login.php)
+		$credentials = [
+			'user_login'    => $username,
+			'user_password' => $password,
+			'remember'      => true,
+		];
+		
+		$user = wp_signon( $credentials, false );
 		
 		if ( is_wp_error( $user ) ) {
 			return new WP_REST_Response( [
@@ -43,15 +49,14 @@ class AuthController {
 		
 		// Check if user has WooCommerce permissions
 		if ( ! user_can( $user, 'manage_woocommerce' ) ) {
+			// Logout if no permission
+			wp_logout();
 			return new WP_REST_Response( [
 				'success' => false,
 				'message' => __( 'You do not have permission to access this area', 'woonoow' ),
 			], 403 );
 		}
 		
-		// Set auth cookie
-		wp_set_auth_cookie( $user->ID, true );
-		
 		// Return user data and new nonce
 		return new WP_REST_Response( [
 			'success' => true,