Why is the sound/ microphone not working on my Nanit?

I put my son down for bed and the nature sounds we’re playing fine. About halfway through the night he woke up and it was no longer playing. I tried unplugging for a minute and plugging back in. Doing a hard reset. Uninstalling and installing the app. Reconnecting to our wifi and everything inbetween and nothing. Neither my microphone or nature sounds are working. The Nanit is not out putting any sound. However the camera works just fine. Please help!