Hi,
I am not able to reproduce the issue.
In my test website, I have a vendor with pack and products. I can display the stats with that vendor.
When I implemented the feature in HikaSerial, I perform these tests. That's why I am surprise of your problem.
So I think that I'll need an access to your website to check the data. But if you are still under "localhost", it will be difficult.
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.