Devices Disconnected

I'm not sure if I could understand the problem correctly, please let me know if otherwise.

I understand that you are using the Orbi app to remotely manage your Orbi network and you have issues with that, correct?

The app remote management is a handy feature that usually works fine and provides you with basic information about your Orbi network, but it depends much on the Orbi's connectivity to the NG servers.

Have you enabled Remote Management? I think it's a more controlled remote management tool than the app. Here is how you activate it: