Hi,
The "coupon generator" plugin store the "discount end" in the serial extra data.
So you can display this value, if you are right using the option "Discount validity period" in your coupon generator.
Type : Serial data... / extradata.discount_end
Format : Date / %d/%m/%Y
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.