Take my apologies for the delay. We are not plugin developers, so some time was needed to sort out.
Example1: You forget to see the amount of discount for the Y product. Before it was 0 http://prntscr.com/tagwydhttp://prntscr.com/tagvoq That means that you give $0 discount for the Y product if the user buy 2 X products. I have changed the discount type to percentage and set 100% that means if the user buy 2 X products (20ml) he gets Y product for free.
Example 2: Do you want to offer the customer $280 discount for the purchase + free Y product?
