Floodlight Cam - No sound

I installed a new Ring Floodlight Cam in the winter of 2019. When I first installed it, everything worked fine as advertised. Now, for the most part everything is working fine but no sound is being emitted. If I activate the siren from my phone to test it, the floodlights come on and the light underneath blinks, but no sound is coming from the device, so I know it connects fine with my phone and the emergency sequence is activated on the device. Also, when I try to use the talk feature, no sound can be heard coming from the device. It sounds like the speaker in it is not working. Any idea what could have caused this and how to fix it?