Latest questions about "blustacks"

I updated the latest version of BlueStacks and re-installed WhatsApp, all my pictures from Whatsapp Bluestacks SDcard are gone. The SDcard is empty now.

I am confused. I can't find pictures that I received in Whatsapp via BlueStacks. Can any one help me to find them?

I read a question someone asked about playing the game Tiny Monsters on their PC and you said to download Bluestack. How exactly does that work?