On the steam store page it says: "This game will unlock in approximately 2 days and 15 hours".
If it works for you, then i am clueless since the game hasn't even been authorized to be played yet until the 9th, I pre-ordered mine and it gives me error "Failed to start, Contact Steam Tech support". This is a old school game i used to play when i was a midget teenager years ago. I have the original version in my old pc storage that looks so outdated lol. it runs with no problems. I'm Sure on April 9th it will work for most of you. If you are asking for a refund then look at the facts...: the game is "locked" right now, if it works... then perhaps you used an exploit or got lucky.... Be patient for a few more days, then you can try again, and if it isnt working still, then you have consent to complain.