maybe you have a bad fair play rating. When you are at the game rooms does the ! symbol appear next to your name? Leaving games reduces the crystals and xp you earn, maybe you'd been leaving too many games.

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Every 5 seconds a prinny is thrown.

Is there any way to fix that

play games without leaving, eventually your xp and crystal gain will return to normal.

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Every 5 seconds a prinny is thrown.