Sorry it took me long to reply, needed to get all the details from Winpalace finance.
As it is stated, this bonus is restricted to slot games only. By gaining all your winnings on restricted games, such as Blackjack, you broke the terms of the bonus.
I apologize that you haven't received an immediate email, it was sent to you the same day, but only today Adriana noticed that it bounced back and resent it to you.
Needless to say that your deposit was immediately sent back.
Hope I helped to clarify this issue.
P.S: Hi Ziggrott, i'll take care of it and get back to you.