Hello, Mirek,
We are glad that you sorted it out.
Please read next articles also – https://woocommerce.com/document/fixing-blurry-product-images/ https://www.8theme.com/documentation/xstore/woocommerce/product-images/
Should you have any further inquiries or issues, we encourage you to contact us without hesitation. Our support team is consistently accessible to provide assistance.
Kind Regards,
8theme team