There are items that I have not received in 3 months

I won some items through Twitchtv, and one of them has been 3 months and I still haven't received it. I would like to know how I can proceed. Previously I received the items normally, now I no longer receive

Name itens:

1 Cloak of the Abyssal
2 Mask of the Vaal
3 Blood Moon Wolf Pack