hey there, this was a bug we fixed on next versions, randomly the game does that. You can fix it by deleting all previous saved data and then starting over. that should fix the problem. Saved files are located in your main drive /users/your user/AppData/... /ZIsland, ie:
C:\Users<your_user>\AppData\Local\ZIsland
Delete the folder and then start from the beginning, if, for any reason the problem persists I can provide a saved file to skip that part. Please let me know if it works