Reply To: Main menu, Ship link to have a product same as in the demo

1.At the moment there is no option to change this number. And the only one way to change it is to modify file basel/woocommerce/single-product/product-thumbnails.php. Change lines:

slidesToShow: 3,
slidesToScroll: 3,

2. You can configure you blog images sizes in Settings -> Media. Then regenerate all thumbnails.