Method from MikeFromFR and andyjy901 helped for me! I got stuck with Google Home app trying to connect Wifi. I connected to Klipsch itself (via Wifi), opened web browser and used the right IP address. I used the browser based tool to connect to my Wifi. After that I returned to my home Wifi and started Google Home app where the installation of the speaker was a success this time. Now Spotify and voice commands etc. work as they did before.