Product image display

-- url of the page with the problem -- : www.aromahub.com
-- HikaShop version -- : 2.6
-- Joomla version -- : 3.4.8
-- PHP version -- : 5.4.45

Dear sir
I want to have more than one product picture on the product page.But when I upload 2 pictures in the back-end ( see the attached Back-End image). It display the 2 pictures vertical instead of display 1 big picture with the small thumbnail under the big picture (See the attached Front-end image). I also want the big picture change accordingly when we hover the mouse over the underneath small thumbnail . How to fix the problem? Did I make something wrong?
Thank you very much

I have tested by changing the default template(Shape5) to Beez (Joomla template), It work fine , it show the small thumbnail correctly. As I am not a coder>
I would be appreciated if you could give me suggestion ,how to fix this issue.
Thanks again

Hello,

As you can see by yourself by changing your template your wrong display is link to your template, and so unfortunately I can only say to contact your template creator.

Regards,