Votes display not correct

This problem only happened after updated to Hikashop 2.0
The numbers of votes display not correct.
The setting of access level for votes or comments is to public.
For example following page, the number of vote always display "1"

www.ispecial.eu/index.php/iphone-shop/iphone-5/product/36-izon

Thank you for advice.

Hi Shiva,

I just tried on your website and the total vote has been increased. (1 > 2)
Don't forget that if you try many times from the same user, the vote is only updated so no vote are added.

When clicking you can see a message "Vote updated".