Hi,
You have a popup problem in HikaShop.
Please change the option "popup mode" in your HikaShop configuration so all popup related to HikaShop and HikaMarket will display fine in the front-end.
I think you are using the "boostrap popup" mode but your template is not compatible with. So using the "mootools" mode will be better.
Regards,
PS: For your HikaMarket questions, please use the HikaMarket forum section otherwise I won't see it and I won't be able to answer you (until someone of the HikaShop team notify me).
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.