Hi Sheriff Ep, sorry for the delay in responding but thank you for writing us here at King Care. To qualify for the reward, you must have been in the top 3 on the Leader Board at the exact time when the challenge finished. It cannot be at any point during the event. When it ends, you will be able to see where you ranked…
I believe these contests are fixed. I am seeing people rack up scores that are IMPOSSIBLE to get in minutes....way to get people to buy boosters? Maybe. Placing "bots" or beta testers armed with exploits in games is commonplace nowadays.