Hi,
Do you have the "shipping per vendor" setting activated in your HikaMarket configuration ?
Thanks to that setting, HikaMarket will create virtual "warehouses" and split the products in different groups (one group per vendor).
When a shipping method is assigned to a vendor, it is only proposed for the "warehouse" of the vendor.
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.