The font is loaded in the file head.hbs.
On the following line:
<link href=”https://fonts.googleapis.com/css?family=Nunito:300,600%7CMontserrat%7CDamion&display=swap” rel=”stylesheet”>
Replace the font Damion with the font that you want to use.
And on line 562 in the file main.css you can change the font:
font-family: “Damion”, cursive;
Good Luck 🙂