1. Actually, you got it wrong, If you change the size of the image from the element settings: https://postimg.cc/67qR84Nq it changes the actual size of the image, which means it renders the size of the image, not the container.
If you want to change the size of the image container then you have to choose/change the “Product Content effect” as per your requirements.
2. You have to edit the Products element and then choose the Grid View and then you will be able to choose the columns: https://postimg.cc/Yv6kQdMy
3. If you are using the single product page builder functionality on your site, then you have to go to XStore >> Theme Settings >> WooCommerce >> Single Product Builder >> Related Products/Upsell Products/Cross Sell Products and you will be able to choose the columns from there.
