Adding 2.4 ghz devices to Orbi

Generally these types of WiFi devices connect like this:

1. The phone connects to the device by either Bluetooth, or more likely by a private WiFi network. You can see this in setup as your phone will connect to an SSID that usually has the device's brand name in it.  This step does not involve the Orbi at all.

2. The phone programs the device with the connection info for your WiFi. In this step you are still connected to the device's private network and you enter your WiFi SSID and passsword. The device uses its 2.4 Ghz Wifi to connect to your network.

3. Your phone switchs back to your WiFi network and confirms it can see the newly setup device.

What part of the setup are you failing on?

Step one only involves your phone directly connecting to the device. If this is not working you should troubleshoot the phone's ability to directly connect to it. The Orbi is not involved yet.

Step 2 only involves the device connecting to your WiFi and as it only has a 2.4 Ghz radio it does not even see the 5 Ghz signal. If this is failing, then the device is having problems connecting to your Orbi. As the device only has a 2.4 Ghz radio nothing you do to the 5 Ghz signal will affect this. Troubleshoot the 2.4 Ghz network, possibly change the channel or look for something that could be interfering.

Step 3 involves your WiFi. The Orbi should be able to bridge the two networks and allow a phone on 5 Ghz to talk to a device on 2.4 Ghz. You can prove this by your ability to connect to any 2.4 Ghz resource on your network.