I lost three wheat generators because the game froze when I merged them; I closed it, and when I started it up again, there is simply empty space where they used to be.

There a lag while I merge the final step of the wheat so I was out and restart the game, then the whole ready wheat disapear

When I was about to merge my plant, the screen froze and wouldn't respond, so I restarted the game and found that both the plant I was about to merge and the ones that had been merged were gone.

merged 5 goats and the game crashed and all my goats disappeared