My reset process that worked:

1. Turn of node
2. Hold down WPS Button, keeping it pressed
3. Turn on node
4. Node will light white, then turn off light
5. Keep holding WPS Button
6. Node will start to blink green
7. Keep holding WPS button
8. Node will turn off light again
9. Turn off node
10. Turn on node – and it will be reset (at least mine did)

I also wasted hours thinking the first time light was turned off was sufficient.

Also, it seems like I had to reset main node first, if not it seemed like slave node some how connected to main node and re synced old config. I noticed when resetting slave node first, it initially started with default SSID (ASUS_80), then changed to a new very long named one for a brief moment – then it connected to main node again.

Doing main node first, seemed to make a difference.