There was just a black and white image upon opening it, nothing else started even when I left it for like 20 minutes and restarted
The code for choosing your language isn't working on your phone for whatever reason. I'm not sure what the issue as it works just fine on my Android device. I can only suggest that you delete the game and redownload it, and if it still doesn't work you'll either have to play it on a PC/laptop (if you have one) or give the game a miss.