IMPORTANT: Do NOT delete or reinstall the game. Otherwise you won't be able to restore it.
Sorry for this inconvenience. We suggest you reboot (turn off and on) your device first to see if it helps to resolve the problem.
In case rebooting didn't help, please make sure to send us the detailed description of the problem. We will look into your problem and try to help you as soon as possible.
If you have a computer and can connect your iOS devices to your PC using an iOS device USB charging cable, send us the log files. It may help us.