Once an item is sold on eBay, JoeLister will update the "FBA ID" column on your "eBay Sales" tab. This means that JoeLister has submitted the order to Amazon and is waiting for them to ship the item. JoeLister will populate the "Fulfillment Status" column on the same page with the tracking number and carrier it receives once Amazon has shipped the order.
Amazon usually takes 24 hours (sometimes up to 48 hours) to ship an order and update tracking information. If you have an FBA ID for a sale and are seeing longer delays with shipment, then this is not an issue with JoeLister but with Amazon. Please contact Amazon Seller Support to troubleshoot or query the reason for slow fulfillment times.