亚马逊selling coach发低库存警告，要发货时又说库存满了，耍我呐？！

有件FBA产品，在selling coach有个Low Inventory Alert，说只剩4个unit了（上个月卖出5个unit）。正准备发货时，亚马逊发信息:”Do not add this product to the shipment. The product is slow-moving, overstocked, or both.”
什么鬼呀？一会儿说我库存不足，一会儿又说库存过多，我到底该相信谁！