Can't add to cart if there is only one product

35 minutes ago, dahae said:

It seems that if there is only 1 product available, you can't add it to the cart as the error message "unable to add item" comes up.

This is a common question, and it happens when you attempt to add the item to the cart for a second time. If there is only one item available, you cannot add it twice! To remove it go to /cart or /checkout on your site and remove the item from your cart/checkout.