I won 19 euros and the wager requirements are x50 to unlock it... but it's a bit strange, my plane level is going up, but it looks like I am playing with demo money. A bit confusing, but I will play around a bit more and see where it takes me.
Lol. I was confused as well with the free bets.
I initially thought they'd let me deposit money after the free bets were all used up however there was nothing and all I could wager was the demo money. So yeahhh, it's all demo.