Hi Wojciech,
Since the plugin v3.2.2, you can use image, image_with_add_to_cart_link or image_with_product_link in columns, like this:
[alg_wc_ppq_products_list category_slug="stoly" columns="image:Image|sku_with_add_to_cart_link:SKU|name:Nazwa modelu|price:Cena brutto|meta:STAL:Stal"]
I hope this helps. Please let me know if you’ll have any questions.