Game is locked when viewing ads. Black screen. Why?
I am running the game on an Android Galaxy S21. Quite often when I view an AD (to earn boosters) the screen goes totally black and i am stuck. The game is still running because I hear the music. Using "back" does not help and I have tried to click everywhere on the screen.
Only way to get out of this mode is to restart the game.
I have updated the SW of the phone and I am playing the most recent version of the game.