You can view statistics about what products were bought together in the Admin Panel > WooCommerce > Bought Together Stats[vc_single_image...

If admin switches from auto to manual, would that remove all the prior automated "groups" that were put together via the " Frequently Bought Together" auto system? No it will not remove the automated bought together products. But when you...

If variation products are missing images you need to set an image on the variable product itself - not on the main product. Other parts are theme related as we load the Theme Product Layout.

If you want to modify, edit or delete stuff from the WooCommerce bought together products template, you need to copy the following file: wp-content/woocommmerce-bought-together/public/partials/bought-together-product.php into your child theme...