What do I do if I don't get any sound in playback?

When I attempt to record a test question, everything seems to be working, but when I attempt to play it back, there is no sound.

It's possible that someone disabled the microphone access to Audio Exam Creator.

(1) Check this by going to Settings -> Privacy -> Microphone. 

(2) Make sure that Audio Exam Creator is allowed to access the microphone.