Stay on page & continue shopping giving 404 error

-- url of the page with the problem -- : kountyhampers.com/Hamper-Store/product/listing


Each time a customer clicks on Add to cart, it's supposed to remain on the same for the customer to continue shopping. Instead it gives a 404 page error.
Please help urgently as it is frustrating cos customers keep complaining that they cant continue shopping on the same page.

Oops sorry about that. I had to change it to Always go to checkout when customers were complaining.
You can try to check the site again. I've changed it to back to Always stay on the same page.
Thank you

Ps: Im using the latest version of Hikashop. 2.2.3

Hi,

Thanks to try to enable the option to use AJAX for add to cart buttons in Configuration > main > advanced.
And in the menu/module options.

Thanks for the support. Everything is working fine now.