Black Ops cold was preload start?

Can someone explain to me how I can start the preload for black ops cw in the playstation store?

I bought the crossgen bundle or pre-ordered it, but I can't find where to start the preload, the internet only says "in the PS store"

I had the problem until yesterday. In the Ps Store on Library. Then click on bought and then on Cold War. Then you can download it.