Coupons for Hika categories with Acymailing plugin

-- HikaShop version -- : 2.0
-- Joomla version -- : 3.1
-- Acymailing version -- : 4.5.0

Hello.
I need to create coupons for whole categories of products with the Acymailing plugin.
I found how to do this for a single product, but not for categories.
I know my Hika is 2.0, but I didn't see this feature in newest versions.

Any help will be appreciated.
Regards

Hi,
Can you tell me what do you exactly mean by :

I found how to do this for a single product, but not for categories.

Hello.
When I create a coupon via Acymailing Plugin, I can only choose one product to apply to. I can't make multi-selection of several products or select a category, as they don't appear in the dropdown list, as shown in the screenshot.

Thank you

Simple as that...
Thank you indeed for fast answer.

Regards.