To purchase a reward, tap “more” -> “rewards store”. Scroll down to see all the rewards offered. Tap the reward you’d like to purchase. If you have enough points, tap the “tap here to purchase this reward” and then tap to confirm the purchase. If you don’t, the bar underneath the reward picture will tell you you don’t have enough points. Once you purchase the reward, it will be located in “My Rewards”. All rewards expire after 1 month, so make sure to use them!
Purchasing a reward uses your points. If you have 25 total points and you purchase a free cookie, your point total will be subtracted to zero.