How to disable Lightbox only for WooCommerce because with the theme product images are not shown. When you click the space where image should be shown, image link is opening separately in a new tab.
Maybe you are using older version of woo commerce in your demo theme preview and thats why working well there.
This issue is related with the last updates.
Sorry to hear of the problem you are having.
Currently there isn’t any theme option to disable Lightbox only for WooCommerce.
I have tested it on my test site and it’s working fine for me using latest version of Gillion theme and WooCommerce.
Could you please clear the WP-Super-Cache that you are using on your shared site and temporary disable it so that I can troubleshoot the issue?