This issue sometimes occurs when other apps seize control and mute the Reading Eggs app. There are a couple of easy solutions to this issue which vary depending on the model of your iPad.
For newer models such as iPad Air or iPad Pro please follow these steps:
- Open the Reading Eggs app
 - Swipe up from either the bottom of the screen or from the top right-hand corner to display the iPad’s control centre (the same one you would use to put your iPad into flight mode)
 - Locate the bell-shaped mute button; this will have a line through it indicating the app has been muted
 - Tap the bell mute icon and the sound will return to the program.
 
For older models of iPads:
- Open the settings on your iPad
 - Open General Settings and locate ‘Use Side Switch to’
 - If ‘Mute’ is selected, please switch it to ‘Lock Rotation’ and vice versa, if ‘Lock Rotation’ is selected please switch it to ‘Mute’
 - Ensure that the lock switch on the side of the iPad is not in the mute position
 - Reopen the app and the sound should play as intended.