Advice needed regarding HomePod stereo set-up

AWT readers, I need your assistance. I’m trying to set up two HomePods as stereo speakers on my Mac. However, I’ve run into a problem.

My home set-up involves a Nighthawk XS router and a “NETGEAR06” home network. When I use the Home app to try to pair HomePods, they appear to pair. But only one will play at time. Or else they play different audio.

HomePod graphic three.png

The Home app then gives me this message: “HomePod features like airPlay and Personal Request may not work on ‘NETGEAR06’ because it does not support peer-to-peer connections.”

I’ve gone online and enabled peer-to-peer connections for the route. But the problem remains the same. Have a solution? Post it in the comments below. Thanks in advance for your help.