I have been using Google nest wifi for a few months and it's been working well. Now i changed my ISP, and problems have started. I tried to connect my nest the same way as before, but it did not manage to connect to the internet.
I tried doing a factory reset (using the button on the bottom) but it didn't help.
So i set up the router that the ISP delivered to work as a bridge and connected my nest to that. Now i get internet, but when i try to set up my nest wifi i keep getting an error message (connection lost) while trying to configure. I saw some advise on here to connect directly to the router using the wifi settings, but it's password protected and i can't figure out what it is.
About the alternative way to connect to the unit, this might be what you've heard about:
Other than that: You said you factory reset by using the physical button. This will not remove the Nest Wifi network from your Google Home home. Make sure you have no Google Home home network before trying to set it up from scratch.