Category not showing

Hi,

I need some help with the product category menu on the left hand side of the site labelled products, it doesn’t want to add a category “spray equipment” however if I change the name too just “equipment” it shows on that category menu bar. Spray equipment is a parent category. If you go the shop page you can see the category but it doesn’t display on the woocommerce side bar there either, but you can see the category listed.

Any help would be appreciated.

The page I need help with: [log in to see the link]