Hi,

I have visited your website the images is working perfectly:
Video for clarification:
https://youtu.be/HrUSvFCaiIw

But basically the products images are controlled by woocommerce and our theme doesn’t influence.
Woocommerce provides settings for images that you can find under Appearance >> Customise >> Woocommerce >> Images.

You can read our detailed documentation for help:
https://xtemos.com/docs-topic/image-size-and-content-alignment-in-a-product-grid/

Best Regards.