@Fizzius YEs, on the Deco App I can see all the nodes and each one of the nodes has a "green  radio signal icon", and if I select each one of them, it says Connected to Main Deco Name and Deco is working well.

I've seen similar posts without any answer from Tp-Link

I've had the same issue forever on my M3 with the base unit and two extra nodes.  I think it worked when I first got it, but it stopped.  TP-Link said they'd fix it ... there have been several updates over the past couple years and it still has this issue.

Now ... after reading their FAQ, I downloaded a WiFi analyzer to my phone and went outside of my house and up the street, then started walking slowly back toward the house.  Eventually my phone saw my network.  All three nodes in fact, which I can only distinguish (in this software) by their mac addresses.  It connected to one as i got pretty close to the house.  Then as I went inside and down the hallway, it connected to the hallway one, and eventually to the main unit which is at the far end of the house in the basement.  In the kitchen the signal strength from all three seems to be about equal.

So it *is* roaming corrrectly and connecting to different nodes in the mesh network.  Hurray.  The actual network is working as advertised.

HOWEVER -- the Deco Software doesn't show me this.  It STILL says everything is connected to the main unit on the main display page.  UNLESS ... I go inspect a single device.  When I go in there for each device, I can see that many are in fact connected to the main unit, and others are connected to "unknown".  The main screen has the other nodes' names right, but when I inspect each device -- if it's not connected to the main one, it says "unknown".

I think if we can somehow fix this "unknown" issue, the main screen telling me how many devices are hooked to which ones would work.

I may try (and I don't know if you can do this but I assume you can) removing the other two devices from the mesh network and then re-add them. 

  @flipster 

Ok, did it.  Same issue.

When I hit the ? next to "unknown" under "connected to", it says:

"Why can't my client recognize the Connected Deco?

Some clients (such as IoT devices connected to a hub) cannot obtain the connected Deco node information.  These clients are collectively listed in the Main Deco's Client list."

So that's got something to do with what's happening.

I have a Pixel 7 Pro, I'm pretty sure it's as up to date as possible.  It's NOT connected to a hub.  And when it's connected to the main unit, it DOES show the main unit's name instead of "unknown".

I wonder if the issue, then, is with the M3W units themselves?  Is there a way to update their firmware?  I just updated the main unit's one before I started all of this experimenting.  That MAY update the M3W's, too ... but I don't know for sure.

Ok, just checked for updates and it shows that the M4R and the M3W's are up to date.

Very frustrating.