"The Sprint" Challenge set should not have a timer to start the next phase. I get wanting to get people to stick around and play longer, but I don't think players will come back just for that. Its not much of a sprint if you have to wait days for the next set of challenges to drop. Makes the reward weird too because its just who can finish phase 4 quickest and not who can finish the whole thing quickest ufeeme? PS I love this game and imma keep playing regardless of challenges