Using this plugin on a wordpress page

I have the plugin installed and activated, I also installed the https://www.ads-software.com/plugins/custom-javascript-editor/ plugin.

I inserted the following code in the “Custom JavaScript editor”

<script>
  $(document).ready(function() {
    $(".fancy_title").lettering();
  });
</script>

And have the following in my page

<h1 class="fancy_title">Some Title</h1>

I’m not getting any results, any ideas?

https://www.ads-software.com/plugins/lettering/