Reboot your Chromecast Audio device

Rebooting your Chromecast Audio device may fix several issues. There are two ways to reboot your Chromecast Audio device:

Option 1– From the Google Home app

1. Make sure that your mobile device or tablet is connected to the same Wi-Fi as your Chromecast device. 
2. Open the Google Home app .
3. Tap your device  Settings .
4. At the top right, tap More   Reboot.

Option 2  – From the power source 

1. Unplug the power cable from the Chromecast Audio device.
2.  Leave it unplugged for ~1 minute.
3.  Plug the power cord back in.