[Bug report] Error! Client and server are out of sync!

doom3007

Rookie
Sep 26, 2018
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So whenever I:
Click the daily discounts,
Tell a hero to stop guarding (Into sleep mode),
Try to upgrade a cannon (probably will cause in archer tower too) with the gear up method,
Upgrade fast stuff,
(I read someone had it while trying to activate a shield, I am not going to try that),
or even randomly!

The app says:
Error!

Client and server are out of sync!

And I have only one option which is: "RELOAD GAME" and it just restarts the app and I get to the previous location before doing that last action.