Recently, I had my skill points above everybody else's skill point total for the week. I am talking about my own leaderboard. Then suddenly my board was reset and I lost the first place position. I then saw the big gap and tried to get more points but again, I believe last night, it reset again and all the points for my leaderboard were lost and I had to start over. I am wondering what is happening. Do I need to do something special to not lose the leaderboard position?