eero 6+ will not complete setup

The checks in more detail

Wait until the eero's light blinks white, which means it is ready to be set up, then follow the app, which finds it by Bluetooth and asks you to name the network and choose a password. If your provider uses a combined modem and router, the eero setup tells you whether to put that device in bridge mode, which avoids a double NAT, and eero's guide explains how. Place the first eero near the modem to begin, and add further eeros afterwards through the app, using Add or replace eero, which also suggests positions. A solid white light shows all is well; a blinking blue light means it is waiting to be set up;

a solid red light means it has lost its internet connection, so check the modem and cable. If the app cannot find the eero, make sure Bluetooth and location are on, move closer and try again. If the eero says the modem is not responding, power cycle both in order, modem first. After setup, write the network name and password somewhere safe, set a strong password for the eero account, and check for firmware updates. Reconnect your devices one at a time using the new password, or use the same name and password as before so they reconnect automatically.

For a business or complex needs, check the options in the app. After setup, spend a few minutes on the settings that matter. Choose a network name that does not reveal your address or name, set a password of at least twelve characters and enable automatic updates. Look at the DHCP and NAT setting and leave it on Automatic unless you were told to bridge. If you want to keep printers and smart devices reachable, note their names so you can find them in the app. Write down the account email for the eero, since you need it to change anything later, and keep the modem's details in a safe place.