Cannot see code

i have included a live chat code ( see below ) into my theme footer.php. However, i just cannot see / find it updated when i do a view source. Pls advise
[ code]

{literal}

var Tawk_API=Tawk_API||{}, Tawk_LoadStart=new Date();
(function(){
var s1=document.createElement(“script”),s0=document.getElementsByTagName(“script”)[0];
s1.async=true;
s1.src=’https://embed.tawk.to/561627ba893fab59658ad45f/default’;
s1.charset=’UTF-8′;
s1.setAttribute(‘crossorigin’,’*’);
s0.parentNode.insertBefore(s1,s0);
})();

{/literal}

[/ code]

URL: http://www.singaporecityexplorers.com