Hi,
Thanks for your interest in our plugins 🙂
Do you have WooCommerce as well? If that’s the case, you could click “edit in woocommerce” under the product data options -> Inventory, and then you can check the box “Enable this to only allow one of this item to be bought in a single order”. However, this will not prevent the member from coming back and placing a second order.
To achieve that you will need one quantity limiting WooCommerce third-party plugin.
There are quite a few out there, some free, some not.
You will need to experiment to find the one that suits your needs.
Here are a couple of examples of such plugins to get you started:
- https://wordpress.org/plugins/woocommerce-max-quantity/
- https://woocommerce.com/products/minmax-quantities/
I hope this helps.
Cheers,
Jeremy