No audio when watching downloaded events

Ok I have a [Mod Edit] of cams like 17 or more.
I’m dealing with a court case and I need the [Mod Edit] audio!!!
I’ve called this [Mod Edit] customer service 3x now and promised calls back and get [Mod Edit].

also the guy on the phone told me you would be swooping my broken cams with new cams. I have 2 v3 cams DEAD!
2 pan cams and 1 battery cam dead!!! Should all be replaced not only that with the new version.

Most importantly I need the audio fixed
I’ve had theses cams for awhile and I know I’m 500% I’m using them right. My phones a iPhone 14 pro max

MOD NOTE: Post edited to conform to the Community Guidelines.