Apex legends pure fire 7-pack bundle‎ bug?

I want to purchase the Apex legends pure fire 7-pack bundle that I haven't bought but it said I already owned. I randomly opened the lifeline Hell Raiser skin from anniversary box from the anniversary event, but I saw the announcement on the anniversary event page that I should still could buy this bundle. I really want to get the bundle for that extra saving from the bundle sale. Any help if that is a bug? Many thanks