Clues to the unanswered questions?

One reviewer says:

“The film leaves many of its questions dangling — a second viewing might clear up some of them, such as what’s happened to Rahim’s first wife and where these corrupting coins really came from in the first place, and indeed, where they’ve now gone. But that seems to be the point. You might think the put-upon little Saivash could hold the key, unable to utter the answer in a world of one person’s word against another’s.”

Has anyone figured out these unanswered questions? I couldn’t!