Q: Whatsapp

Hello carolafromcatania,

I understand that you are having an issue with WhatsApp not working properly with your audio files. Let's see what troubleshooting is available. 

For most apps downloaded from the App Store, you can use the troubleshooting outlined below to sort out most issues. Also because you are dealing with sound, make sure that your iPhone is not on silent and the volume is set to an appropriate level.

If an app you installed unexpectedly quits, stops responding, or won’t open
https://support.apple.com/en-us/HT201398​

If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker
https://support.apple.com/en-us/HT203794

Take it easy