A:Answer Hi there, Mui. Sorry to see you ran into an issue setting up your Nest Hub (2nd Gen). Here are a few troubleshooting steps to get your device up and running:
1. Reboot your Wi-Fi router.
2. Reboot your Nest speaker.
3. On your mobile device, turn off the Wi-Fi, then turn it back on.
4. If you have a dual-band router, try to set up your speaker or display on both the 2.4 GHz and 5 GHz bands.
We’re happy to lend an extra hand: https://support.google.com/googlenest/gethelp