Please post more information about the error you are getting. Try to get the routers more close together, and add them with the Google Home app. See if you can build the mesh close together, and later you move the routers away.
Hi, everyone. Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know. Thanks, - Jeff