Hello,
Tags are related to Joomla core and more specifically to the "com_tags" components and the UCM.
Integration to the UCM does not support images due to the impossibility of "field mapping" :
docs.joomla.org/J3.x:Using_Tags_in_an_Extension
Now, if someone got a solution to add that support while HikaShop do not have one field for the images but elements stores in a specific table ; we will be glad to add the implementation !
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.