I keep getting the same evolution item

Hi, I know that they have this update where you get the evolution items every 7 days. Well I keep getting the same exact one. Ow for the past two months and its not helping me one bit. So can some lady please fix this where we actually get the different ones once the next week comes please. This game got worse once they added generation 2.

BishopTy about Pokémon GO, v1.31.0