@David-TP Thank for your reply. PM sent! How I found out which node has the open SSID: I have three P7; main one on upper floor with modem, second one bottom floor in the hallway anf third one a half...

Had a power outage and everything restarted. Then I couldn't get the last mesh point to connect, it just blinked red. If I moved it so it was 2.5 meters with line of sight to the nearest it still...