All my product subcategories not displaying on mobile

Site URL: https://onyxhive.com.au

Hey guys,

So I finally got around to add sub categories on my products. Working fine on desktop but its not showing on mobile?

Only the "all products" page shows the subcategories on mobile (onyxhive.com.au/cakes), when you go to a subcategory for example: (onyxhive.com.au/cakes/eventcakes), the top subcategories at the top vanishes. This is not user friendly at all, all subcategories should have the subcategories at the top

How do I fix this to have all subcategories to appear at the top of each subcategory page?

Help please