Audio prompts just stopped working

I'm hoping someone can help.  I know this has been raised before but that was to do with earlier software.

Until August 2024 I was a Fenix 7 user and used audio prompts.  I then changed to the FR965 and everything worked as per the Fenix which was great. My workouts are split into many intervals and segments with differing paces or heart rate zones for varying durations.  Up until around the end of October everything worked fine.  I would get a prompt telling me what to do and for how long, interrupting my music but now it's just stopped working unless I stop the music playing.

All the prompt settings are as they should be on both the watch and via the Connect app.  I am using an iphone 14 Pro (iOS 18.01) and I've not performed any updates to that recently.  My FR965 is running software version 20.32.  For headphones I am using Shokz Open Run Pro and they have a multi point pairing to my 965 and my iphone.

Oddly when it used to work my audio prompts would be a male voice even though it's set to UK female (as is my iPhone Siri).  I'm not fussed really about the voice sex but just another weird one.

Any help would be greatly appreciated as this feature is really helpful as I can't always see what my next internal is when I'm running.