We would like to bring your attention to the fact that changing system clock time or date affects the game. It is not allowed to do while playing the game as can help to get an unfair advantage.
In order to avoid such situations we strongly recommend you to set system date/time in the following way:
1. Close the game completely when you want to change the settings: press and hold the Back button, then swipe through your open apps to find the game and press the Close icon on it. On Windows Phone 8.1 you can close the game in the following way: press and hold the Back button, then swipe down on the game window.
2. Perform the changes using the Time Zone option. If you set date/time manually it will affect the game and you will receive a warning message.
3. Open the game again only after you complete all the changes.
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