If you don't understand, just ask. If I recharge 1200u, I get 17 points daily. After fifteen days, that would be 255 points. If on the fifteenth day I receive three airdrops in one day, I will be down to 210 points. Therefore, for all the following days, it will be +17 -17. Because every day I need to consume the 17 points from fifteen days ago. This will cycle infinitely within the 210 points. How to continue receiving airdrops? After fifteen days, the 45 points deducted will continue to be returned to you.