New to Amazon: stock received but product listing "currently unavailable"

28 out of a total of 994 units shipped to Amazon have been received so far. My “manage inventory” page says that the 28 units are available. But my product listing says “currently unavailable” so I am unable to sell these products. Its the first time these products are being sold on Amazon. I created my account and product listing ages ago and to my knowledge there are no issues with my account, nor the listing itself. Why wouldn’t I be able to start selling these 28 units (even though the entire shipment hasn’t been received yet?). Help!!