my awards

Hello, I reached world rank in my division to get rewards. I needed 2000 diamonds and other rewards, and I worked very hard for it. I even won my last match on counter-attack, but when I returned to the game, it lagged and froze. I logged out and back in, and it showed that I had reached the rank, but the rewards weren't there. It shows that I received the rewards, but I haven't received any. Can you help me?