I am currently developing a Web App using Angular, Bootstrap, and derived from the Ace Admin Responsiveness template. Everything functions well on PC browsers such as Chrome and FireFox. When we resize the window or use Responsive Design Review, the sidebar navigation switches to a menu button and works properly. However, when accessed on a tablet or phone (using Chrome or Firefox), the menu button is visible but unresponsive. Any suggestions? Below is the opening HTML page for my app, excluding the JavaScript components. The rest of the code is provided.
<!DOCTYPE html>
<html lang="en" ng-app="mainApp">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
<meta charset="utf-8"/>
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="images/favicon.ico">
<title>DISCUS Admin</title>;
...
<!-- inline scripts related to this page -->
<!-- ace settings handler -->
<script src="resources/ace/assets/js/ace-extra.min.js"></script>
<!-- HTML5shiv and Respond.js for IE8 to support HTML5 elements and media queries -->
...