デベロッパの回答 、 Sorry you're having difficulty with the app. Sorry to hear you are having trouble with our app. Normally problems with sound are due to the fact that the mute switch on the device is engaged. This can be a little confusing because not all apps obey the mute button, but ours do, so while you will be able to hear other apps, you would not be able to hear ours. All you have to do is toggle the mute switch which is located on the side of your tablet or smartphone. Once you toggle it you will hear sound again. If there is no mute button please slide up the menu from the bottom of the iPad screen to find the mute button icon. If you still cannot hear sound, please try the following: Go to Settings > General. Under "Use Side Switch To" please ensure that the "Mute" option is selected, and not the "Lock Rotation" button. Then ensure that the Lock / Unlock setting is switched on (to unlock). You might have to restart your device afterwards. If this doesn't work please email us at support@storytoys.com.