I have had multiple experiences with Clash of Clans not saving (for lack of a better word) before I close the game, and not noticing until the next time I play.
For example:
I open the game and train some troops, then close the game. Then I come back later to check on them, but they have disappeared, neither in the barracks or the army camps. I assume this is because my client did not sync with the server before I closed the game.
Note: this has also occurred while over a stable WiFi connection. My Clash of Clans is connected to Facebook and Google+.
When does Clash of Clans save and how can I make sure this happens?
Best Answer
Clash of Clans syncs almost in real time, but it doesn't tell you that you have disconnected from the game the moment you disconnect from the game. Starting at the disconnection time, Clash of Clans will attempt to reconnect. If it doesn't connect in a specific period of time, it will give you the error message. If you exit the game before re-connection, it wont save the changes. You may disconnect from Clash of Clans but still have a stable connection to your Wi-Fi or data. Before exiting the game, I always find a multiplayer match (because that requires a connection to Clash of Clans) then exit the game to ensure that my changes have been saved