I am changing my rating from 4 stars to 2 because lately the app just freezes unexpectedly. I have communicated multiple times with support. Following their advice to clear data, force stop, uninstall and reinstall, etc., just wipes out previous communications with support and doesn't solve the proble. After 2 years of enjoying this game I will be forced to stop playing because of this frustrating problem and chaotic support. Someone needs to keep track of problem reports and fix this!