No Menu (grey) means the delivery date exists and is open but has no meals attached for the selected kitchen, so customers cannot order for it and the Menu Channels list shows 0 on the Menu rows. Fix it by building a menu for that date: click Go To Menu in Quick Actions (or Create New > Menu) to open the Menus page for the date and add meals, or clone a previous menu. If this happens regularly because your team forgets, consider enabling Theme: Kitchen > Select Previous Menu if Meals are not selected for Delivery Date on Cutoff Day.