If all fail, why not u try reseting the game?
Last time when there was a major issue , gumi ask to do the following
1. Start the game
2. When the splash screen appears, press and hold somewhere on the top part between Wiki and Support
3. Eventually u get a pop up message to sleet data
This means that it reset the whole game them u need to login Facebook again on the game and re-download all the game data again
Good luck. Do at your own risk !!