Hi,
There is no specific link between the HikaShop coupon and the HikaSerial serial after the generation.
Your coupon can be used several times so it is very hard to have such link between the two elements.
The serial should be generated in the "used" status. It is currently not possible to change the serial status when a coupon changed (as I said, it is very difficult to know when a coupon is "used", it depends on your template configuration).
You can follow the serial generation in the HikaSerial serial listing (using the filters to select the pack you want).
You can follow the coupons in the HikaShop discount listing (you can use some filters too).
If you have some ideas for improving the plugin, if you have a good idea of what you want to have for the interface, for the statistics and other ; do not hesitate to propose and we will analyze your request.
Best 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.