Okay this is similar to what other have posted. But I had to do different steps
Get the free iMazing app on your mac.
In the app open the "Manage apps" on the right column.
Under the device tab scroll down to the iTalk app, right click and select "restore App data". Not sure what this does it puts a file on your desk top but after it is complete you can use the iTalk app on your iphone again.
To get the files off your iphone you follow the standard download from iphone to Mac. Go to finder on your Mac if you go the files tab you will see the Italk app again.
From there you can expand and see all your audio recordings.
You can simply drag and drop from that folder to your desktop and save.
Get them off your phone soon not sure how long you'll be able to do this trick. you can play the audio files on the music app.
Any questions i might be able to help more.