

It seems like Echo is saving not only the SSID, but also the MAC (or something similar) when first connecting to a WiFi. The thread is old, but still the first thing that pops up when searching for it, so I'll add what I found after an evening of debugging: I’m still not 100% sure if one of the speakers being connected to a Fibe Pod instead of the main router was the issue, or if they just needed the factory reset…but this is what solved the problem for me so I figured I’d leave this comment here in case it can help you or someone else who stumbles upon this thread. Once this was done I plugged in the Wi-Fi extender pods again and everything is working fine.

When I re-registered the speakers to my Alexa account they all worked perfectly again, and I was able to add them to multi-room groups etc. What worked for me was unplugging all the Fibe Pods so the main router was the only Wi-Fi source in the house on that network, then I reset the main router, and reset all 3 of my Echo speakers to factory settings (by holding down the “mic off” and “volume down” buttons for 20 seconds). I messed around with everything for a while before finally figuring it out.

I suspect the issue is that one of the Echo speakers was connected to one of the Wi-Fi extenders instead of the main router. I’m in Canada and have Bell Fibe internet with Bell’s “Fibe Pod” Wi-Fi extenders. I had the same problem and came across this old thread as well before finding a solution.
