Submenus don't show up on mobile

Great theme, funky menu!

I just installed and the submenus won’t appear on mobile. The only mods I’ve made are setting the top menu to display:none and adding a logo. I tried setting the top menu back to see if it affected it, but it doesn’t.

I see this working on other websites, so no idea what it can be?

When I click the main link containing the sublinks, it turns blue as it should, but doesn’t display the links underneath as it should.

https:///www.songthropology.com

Thanks!
-Sam