[quote name='lupinckc']I entered each day 1 time and I won twice ^^.
but, unfortunately the 2nd win was the same code as the first [/quote]
You didn't get cheated, you didn't win twice. Some people (maybe everyone) got the e-mail for the third night or the e-mail for the day they won (I'm not sure which yet) twice. I only entered twice, but I got three e-mails.
[quote name='dragonsho']I entered all 3 times and didn't receive any emails. Any reason why?[/quote] I don't think you are guaranteed to win. The people that won are just lucky. Signing up doesn't mean that they will give you points.