Hello,
Sorry for a long delay.
There is a bug in the theme with alt text for images. We’ll fix it in our future update. Meanwhile you can resolve it in the file blanco/woocommerce/single-product/product-image.php, find the line 41 and after the code src="<?php echo etheme_get_image( $imgId, $mainWidth, $mainHeight, $crop ) ?>"
add this line alt="<?php echo get_post_meta($imgId, '_wp_attachment_image_alt', true)?>"
Please take our apologies for inconveniences.
Regards,
Eva Kemp.