WooCommerce Product Images not showing

Hello, i hope you’re all are well. I’m facing a weird issue with woocommerce, Product image disappears after adding a second image ( image gallery).
when i keep the product image only it shows on product page. but when i add more images to the gallery, The product image disappears.
i removed all products and i reinstalled woocoomerce several times but no result.
any idea please help.
here is the URL: https://www.swikti.ma/product/product-1/
Thank you in advance.
Best regards.

The page I need help with: [log in to see the link]