Notification sold out

[Monika1]

After buying the last item in stock and completing the order, my customers receive a notification that the item is no longer in stock. They get frustrated because they have already paid for this item and they want their money back. What really happens is that the item went out of stock after they bought it, which means the item is available for them. How can I solve this?

[Valentyna1]

Hi, @Monika1 

Could you please clarify which app you use to send notifications? And share its algorithm if possible.

[Monika1]

Hi, after they finish check out, instead of seeing page thank you for your purchase they see this message:

Out of stock

Some items are no longer available and have been removed from your cart.

They are actually still in my shopify store.

[Monika1]

Hi, they see the notification on the shopify page. After they complete the payment, instead of order confirmed they see that some of the products in their cart is sold out.