@Alexandre. The App does not find it but I have scanned the QR code on the new/4th node and my phone sees it on WiFi . My phone connects but no internet.

@yves_b thank you. I will try that...for longer

I have set up a 3-pack mesh using the App with no problems. The nodes have their own data and PoE cabling to a switcher. I have tried to set up an additional node to the network again, wired back to...