Google Nest Community

I have 4 nest cameras 1 nest with flood light and it works fine I have 1 IQ camera and 2 older nest outdoor cameras the IQ and the 2 older cameras the person outside can hear you but I can’t hear them I tried the nest app and I tried the google home ...

On my out door camera when i try to speak with someone they can hear me but i cant hear them do any one else having these problem

I just purchased a nest camera and floodlight not realizing my existing floodlights is mounted under my Eva can I still mount my flood lights under there or do they make a Universal mounting base