Please help me.

Hello, my names Andrew and just now my game decided to reset its self. I just got out of a match, and then it reset the app and brought me to the level one screen. I have devoted so much time and effort into this game, Ive had it since it came out, I had so many high level cards, and I was also at 3300 trophies at level ten just to see it go away. I would really appreciate it if I can have some assistance with the game. This is my go to favourite game, and just to see it disappear makes me really mad. Please help me out. Thanks.

Andrew - please help me1230 about Clash Royale, v1.8.1