Orbi not seeing AirPort Express 802.11n (1st Generation)

[Brettmc]

I have three of these: https://support.apple.com/kb/SP1?locale=en_US
and they are not seen by my new Orbi. I use them as AirPlay devices to stream music through my home. Can you please tell me what I need to do to get them to work with Orbi.

Thanks!

[MarkC1024]

Were they previously part of another network or configured as extenders?  I'd start with a hard reset and then use the airport utility to reconfigure for the Orbi network.