@MD81 @daou in the defence of those who bought this, it is not an easy field to know the results, not all have heavy ancestral karma, there are clear signs where ancestors are unhappy and how they block all the good things in the lives of their descendants.
Also it is a very cultural thing, cultures that pay respects and honour ancestors through rituals would be conscious about such blockages while other cultures would be totally oblivious to those things unless people get some reading through some psychic or some other way.