Hi, folks.
In case @Catherine_Wallace doesn’t make her way back here…
I’ve been directly chatting with Cate for a few days. We hopped on the phone today and got her network sorted out. The most straightforward path was to put the Eero into bridge mode. Her network is more complicated than this thread suggested - she has a 16-port switch plugged into the Zyxel. It wasn’t going to work to put the Zyxel into bridge mode without also topologically moving the Eero to the other side of it. Putting the Eero into bridge mode was an instant fix and kept her network running exactly as it had been. Once we did that, the KEFs showed up and she was able to see and add them as a Roon zone.
This forum is such a great resource. Lots of great input for Cate and I’m glad I was able to help. Thanks, everyone.