I downloaded it from both the places you listed and the password entry screen immediately dismisses itself before I can do anything. I haven't actually gotten past level 3 to see what happens, but this leads me to wonder if both of those downloads MIGHT be cracked already.

If you systematically guessed, I believe it would take only 343 attempts to figure out the 3-block code for each master block, which is tedious but certainly humanly possible, especially with a Mac emulator with freeze/defrost capability. (Each block in each 3-block code has 7 possibilities, so 7 * 7 * 7 = 343.)