Cannot add 3rd device

[PV1]

Hi all, so I purchased the Google Wifi Pro 3 pack to fix my home wireless issues. 

The first point is connected directly to the modem and a switch so it creates a wired feed through the house. I could set this up easily.

The second point is connected via ethernet to the first, and after a few minor struggles (I was attempting to connect to router wirelessly) I have created a mesh network and internet is working.

But for some unknown reason the third point will not connect. I've tried to connect wirelessly and wired, even if it is in the same room as the router. 

I can find the device, scan the code, connect to the router, create a new point, join the network... But it stops when "Creating wifi network". There was no trouble adding the second point as a node.

[PV1 · Accepted solution]

Solved:

I did a factory reset of the 3rd node and now it is working. There is a tiny button (looks like a circle) on the bottom. Hold it, the light will flash orange, then solid orange (let go then). This resets the specific node. The light will turn white, then blue to indicate it's ready to connect