All the rewards you can claim starts a ad that takes control of the phones volume control and blast the ad at max volume. There is no way to get around this or setting to disable to stop it from happening. Even the audio mute button located in the ad itself does nothing to stop the blasting audio coming out of the ad itself. The volume does respond correctly in game outside the ad but I cannot support or rate more then a single star for the fact they designed this game to take control