Tracking Not Installed

Hi, I purchased Catch Everest Pro theme today and installed it. I also put Google Analytics's tracking code on "Code to Display on Header" in Webmaster tools but I got "Tracking Not Installed" notice at my Google Analytics page. I put the code below. <script> (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); ga('create', 'UA-XXXXXXXX-X', 'auto'); // I marked as X to post it here. ga('require', 'displayfeatures'); ga('send', 'pageview'); </script> I am very new to WordPress and Google Analytics. Could you please Help me to solve this problem? Thank you.