Game Crashing...?

I'm unable to play the game, I installed the game after a long time.. just to find out every game that I play is crashing. I start a match play for few minutes and it get closed on itself in between the game I don't know what's the problem and also I'm unable to see the map as it was earlier ( not sure if it's something new.. all I see a blank space in place of map and when I tap there are some dots or legends). Help me out with this problem, what should I do?