This problem may be caused by high demand or limited supply of the product. When a product is purchased by many consumers, the inventory may be sold out quickly. In addition, supply chain issues or production capacity limitations may also cause the product to be sold out quickly. Because it is popular and recognized by consumers, it may be difficult to meet the needs of everyone.

To solve this problem, manufacturers may increase production, improve the supply chain, or replenish inventory regularly. At the same time, consumers can subscribe to product notifications or make reservations in advance to ensure that they have the opportunity to buy every time it is restocked.