diff --git a/samples/chat/css/main.css b/samples/chat/css/main.css
index 126a3f74..4b9ac8f8 100644
--- a/samples/chat/css/main.css
+++ b/samples/chat/css/main.css
@@ -30,6 +30,7 @@
     --search-height: 36px;
     --toolbar-height: 49px;
     --sidebar-width: 374px;
+    --cash-tester-color: orange;
 }
 
 * {
diff --git a/samples/chat/index.html b/samples/chat/index.html
index 1c2c9876..dbdcd75d 100755
--- a/samples/chat/index.html
+++ b/samples/chat/index.html
@@ -4,6 +4,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1">
     <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
     <title>QuickBlox chat code sample</title>
     <link rel="shortcut icon" href="https://quickblox.com/favicon.ico">
 
@@ -131,7 +132,7 @@ <h2>Info</h2>
 
     <div class="dashboard">
         <div class="dashboard_center copyright-2020-pow ">
-            <samp style="padding-right: 6px;">Copyright © 2020 Powered by QuickBlox. All rights reserved.</samp>
+            <samp style="padding-right: 6px;">Copyright © 2020 Powered by QuickBlox. All rights reserved. Sample version 1.0.0.</samp>
 
         </div>
 
diff --git a/samples/chat/js/app.js b/samples/chat/js/app.js
index 32599a6c..baf256f9 100644
--- a/samples/chat/js/app.js
+++ b/samples/chat/js/app.js
@@ -41,6 +41,7 @@ App.prototype.init = function (config) {
     // Step 1. QB SDK initialization.
     QB = _.clone(qbConnectService.qb);
     QB.init(config.credentials.appId, config.credentials.authKey, config.credentials.authSecret, config.appConfig);
+    console.log('QB version: ', QB.version, ' build number: ', QB.buildNumber, ' sample version: 1.0.0');
 };
 
 App.prototype.renderDashboard = function (activeTabName) {
diff --git a/samples/react-chat-ui-kit-demo-app/src/index.tsx b/samples/react-chat-ui-kit-demo-app/src/index.tsx
index f24218b7..ba609d84 100644
--- a/samples/react-chat-ui-kit-demo-app/src/index.tsx
+++ b/samples/react-chat-ui-kit-demo-app/src/index.tsx
@@ -1,6 +1,6 @@
 import React from 'react';
 import ReactDOM from 'react-dom/client';
-import { BrowserRouter } from 'react-router-dom';
+import {HashRouter} from 'react-router-dom';
 import './index.scss';
 import App from './App';
 import reportWebVitals from './reportWebVitals';
@@ -10,9 +10,9 @@ const root = ReactDOM.createRoot(
 );
 root.render(
   <React.StrictMode>
-      <BrowserRouter>
+      <HashRouter>
           <App />
-      </BrowserRouter>
+      </HashRouter>
   </React.StrictMode>
 );