Hi Ludia, my daughter and I have encountered identical problems this evening. In all of the three battles the game locks when the turn counter reaches zero and then the game continuously recycles in a loading and reconnecting screen. This is unusual and I have certainly not encountered this before during my time as a gamer. The only way to return to the game is a hard reboot and after which the battle/score has been recorded as being identical for each game irrespective of how well, or poorly you perform during the game itself.
Very definitely broken.