Coupon validity

-- url of the page with the problem -- : www.pixelsandstrokes.com.au
-- HikaShop version -- : 4.0.3
-- Joomla version -- : 3.9.4
-- PHP version -- : 7.2.16
-- Browser(s) name and version -- : Firefox
-- Error-message(debug-mod must be tuned on) -- : How to question- not an error

Hi,

I have been trying to set up my acymailing newsletter and wanted to offer discount if guest/registered user signs up for my newsletter. The question is how do I set it up so it is valid for say (for example) only 3 months from the date of signing up to my newsletter. I can see that there is a start date and end date, but I don't think that helps me achieve that. I am using hikashop-acymailing (v5.10.7) plugin to achieve this. Your help will be highly appreciated.

Thanks

Hopefully this is something that you might be able to add to it in one of your future updates. Perhaps for the Acymailing V6 plugin system! I saw that something similar (on one of your documentation online) was available for Hikaserial - discount validity setting in plugin?