Hi,
HikaMarket does not have the possibility to affect the product page display.
But the customer should not be able to buy the product due to vendor restriction.
When you unpublish a vendor ; his products are still published to let the products be published correctly when the vendor will be re-published.
Otherwise you couldn't see the difference between unpublished products that's why HikaMarket add filters on the product listing (and "add to cart" checks).
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.