Audio Prompts not working on custom cardio workout

Just got my Vivoactive 5. I created a custom cardio workout to do some boxing. I set it up so I have a 1 minute activity followed by 30 seconds rest. The activites are set to cardio. I play music from the watch when I'm using it. 

The only time I get the Audio Prompts is when I stop or start the workout. I never get an audio prompt when the timer for each step runs out. My watch vibrates when the timer runs out on a step but want to hear an audio prompt saying to start and stop. 

Updated to 9.28 but still not working. 

Any idea what is wrong?