1- i did lookFirst, did you look to see if there was a log file.
If not, did you try deleting, re-downloading and unzipping again?
If it never even tried to start, there have to be missing files, so you might have had a glitched download. If it tried to start but didn't appear to start there should still be a log file.
2- yep did that 2 times
3 - weird i redownloaded the game 2 times
idk what can be just wanted to play the game