What to look at here: This belt and the Beanie share one limit of 10 for their category. Add 5 belts, then try 6 beanies and the plugin blocks it.
Restrict by Category
Category Limit of 10 - Belt
$10.00
This product is from “Restrict by Category” category, which has a quantity restriction of 10 for products in that category in a period of 3 minutes (after placing the order).
Meaning, you can combine from Product 2 & Product 3 without exceeding quantity of 10 in a span of 3 minutes.
The plugin can identify logged-in users & guests, in this case, it’s tracking guests by their IP address (can be configured by billing email address, and soon billing address).

