None of the physical copies say 7 Sins on the box.
The image you see online with “7 Sins” on the art comes from the original Kickstarter campaign.
I suspect they removed it from the box art and official game name because, during that campaign, so many people complained that the box only included two sins.
I could see how people could be choked about it not including all the sins. I have the KS edition and buddies are still shocked it doesn't include all 7 in base box.