Skins not shown up in inventory after packopening

Unfortunate, i saved some old event packs. as i got the "jadeite retribution" peacekeeper skin, it wasnt in my account inventory. I contacted ea support multiple times but they are saying that there is not data about that skin in my account datas. What do I do now? Like, i wanna have the Peacekeeper skin, so is there any way to contact the dev team by any chance?