Hi edwin
If the product disappears it's probably due to your WooCommerce's settings. Did you configure it to hide the products that are "out of stock"?
And if your products are running out of stock when the first one is depleted, could be due to one of these configurations:
- You have the region restriction enabled and only the first one is matching the visitor's region.
- You have set the "Inventory Iteration" to "Show Out of Stock" and this does exactly that (once the first in the list is depleted, the next ones are out of stock).
I would recommend you read the documentation:
https://forum.stockmanagementlabs.com/t/region-restriction-mode
https://forum.stockmanagementlabs.com/t/mi-inventory-iteration
Best Regards,
Salva.