Hi,
In most browser, you have some debugging tools.
In Firefox, you can open the "error console" thanks to the shortcut "Ctrl+Shift+J" (or by the "web development" menu).
In Google Chrome, you can see the "JavaScript console" thanks to the shortcut "Ctrl+Shift+J" (or by the "Tools" menu).
And, with a link to your store, we could have a look on it
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.