Hello,

Sorry to say but your provided WP-ADMIN Login details aren’t working. Can you please share valid WP-ADMIN Login details of your Site so that we can proceed further and check the issue on your Site and assist you accordingly.

Further, as we have checked the Images they are appearing as larger: https://snipboard.io/qImRHJ.jpg
The size changing of the images also depends on the fact that the original dimension of the Image should also be on the standard size defined by WooCommerce so that defining a certain Image Width would take effect. You can read more about it here: https://xtemos.com/docs-topic/image-size-and-content-alignment-in-a-product-grid/

Best Regards