I had this working for quite a bit until a few months ago. The audible alert noise still goes through but there is no audio as far as wav files or voice. I have the google home chromecast set as ahdio sink, callback url is http with port 8080, ip address is ok. Voicerss enUS with api is set. I do ha e voicerss set for 16bit stereo
If i change the audio sink to something else it works through app.