Stucked in the grand prize screen - unable to races.

I was playing real racing 3 and game says i've won the grand prize. But i need 4500 points to get the prize but i have only 3000, i have to enter more races for the get more points, but i cant get out the prize screen. Game continually says "you've won the grand prize!" But i haven't, i've already tried reinstalling the game, clearing data, loading cloud saves, restarting my device and resetting progress — nothing worked. What should i do? (Btw i've tried sending the ticket too, they said please wait.)