No, there's no website needed. Look at the challenge poster, with the arrows. They're pointing in four different directions like the twelve directions on the face of the safe.
I think it's complicated. But your map is too abstract, I didn't see the direction of the triangle symbols clearly.
Does this game have two endings? Can't I enter the door next to the photo?
Yes, there are two endings. If you replay the game you might find some things that weren't there before, but you'll have to look closely.
