!כל הקולקציות שלנו

You do not have a link list with a handle set to כל-הקולקציות-שלנו, or you do and it's empty. Go ahead and create a link list called !כל הקולקציות שלנו 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 כל-הקולקציות-שלנו.