I've set my subcategories to always show on main page:

Layout Settings >> Categories - Always Open to Show SubCategories

...is set to 1, and:

Product Listing >> Show SubCategories on Main Page while navigating

...is set to 1.

But they don't show as open by default.

If you click on a top level cat, the subcats open and stay open, but when returning to the main page, they are closed again.

Here:

http://zen.kaylenessentials.co.nz/

"Oils" has two subcats but they don't show on the home/main page.

I'm missing something, obviously.

What could it be?