Hi @Propero - I'm encountering the same issue with the theme and our site is live. It would be great to know if this is something that can be fixed.
Section on page where this is visible: 'SHOP BY CATEGORY'
Issue: We have setup a collection image to be a special image that represents the collection. The collection image we setup is visible from the left/admin area interface when editing the page section, but the right/preview of the page (and the live page) is instead showing an image of the first pictured item in the collection.
Note that we have the collection setup so that the products are sorted as 'newest' first and the first image/product is what is being featured in the homepage section...but it should be showing the collection image we set instead.
I believe this could be resolved by changing the collection 'sort', but this isn't ideal as I feel the theme should respect the collection image.
I'd love to hear your thoughts/ideas. Thanks!