D4 A8/S8/S8+

You do not have a link list with a handle set to d4-a8-s8-s8, or you do and it's empty. Go ahead and create a link list called D4 A8/S8/S8+ on your Navigation page and populate that link list with links that point to collections, to see collections listed here. Make sure the link list also has a handle set to d4-a8-s8-s8.