Hi,
For your questions related to HikaSerial ; it would be more interesting to (just) post in HikaSerial (and not duplicate your question).
Because I'm afraid the HikaShop support team can't answer you for your HikaSerial question...
Regards,
PS : HikaShop 2.7 is not a valid version number.
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.