I double checked. You didn't play in Game #30.
This leaderboard is only for the new round (4). It is reset after each round. Game #30 is the first game of this round. You will be on the next one, for playing in this game (#31).
Also, you are on the “All Time Leaderboard” found here if you want to check it out.
Thanks for playing and taking the time to check! :)