Compass Connect on an iPad and it is connected to a mytobiidynavox.com account with a valid subscription. Selecting items that should speak do not. Access the settings menu and selecting Speak next to the voice preview will not produce sound.
This is usually the slide switch on the side of the iPad.
Check in your iPad's general settings for the "Use side switch to:"
Change it to Lock rotation and bring up the volume using the external volume up. It will show an icon as Sound effects volume.
If you don't have a switch on the side swipe up on the screen to show the control center.