You are playing! Join the game,but shows a random game.

Hello,
I was(am) playing a tournament Monthly Hyperbullet, but somehow after some game, it said you are playing! join the game,but when i click the board it loads this game - lichess.org/0cmtFbYl
Can someone help me?

Update - I joined another tournament, it works fine. But the 1st tournament still shows the same.