So it looks like the code they use on the website is the same code you’ll need to use—the following gives me alternates:
<style>
.YOUR-CLASS {
font-feature-settings: "ss01";
}
</style>
Just add a class to your text element using the Kobe font and then use the code above in an HTML Embed element on the page to see the changes in the Designer:
Let me know if you run into any problems!