This article explains why a product may appear as unavailable in your payment form.
Use it when customers cannot select or purchase a product at checkout because product quantity is enabled and the available stock has reached zero.
Why the product appears unavailable
If a product is marked as unavailable in your payment form, it usually means that product quantity has been enabled and the available stock has reached zero.
For more details, see:
How to manage product quantity and availability
How to Check and Update Product Availability
1. Access Product Settings
Go to Sales → Offers
In the Forms tab, select the offer containing the unavailable product.
Open the Products tab.
Edit the affected product.
2. Check Quantity Settings
In the Quantity section, the Quantity setting should be enabled. Check the available quantity.
How to Make the Product Available Again
If product quantity is enabled, you have two ways to restore availability:
Option 1: Disable Product Quantity
Uncheck the Quantity checkbox.
This allows the product to be purchased without quantity limits.
Option 2: Set a New Available Quantity
Enter a new value for the available quantity.
The product will remain available until the new stock is depleted.
After applying your changes, scroll down to the bottom of the page and click Confirm to save.
Important notes
If quantity is enabled but no specific stock quantity is set, customers can still select a quantity at checkout, within the configured minimum and maximum purchase limits.
If the available quantity reaches zero again, the product automatically appears as unavailable.
At this stage, the product will be available again according to the quantity settings you selected.