Why does the mobile app use my lives on the "free to play" bonus challenge?

genwill

When I open my mobile app it says that the frozen lake challenge is "free to play".  However, every time I have played a round it uses one of my lives, over 10 lives now used on this "free" challenge.

aCe

Hmm, are you talking about the up, up and away challenge? I think even if the promotions are free, they will still use up your lives. I haven't seen an in-game promo that doesn't.