Hi David,
 

I hope this message finds you well. I wanted to update you on the situation.
I have the  Archer AX20 FYI.
 

The day I sent the original message, I managed to resolve the issue I was experiencing and got everything working properly.
It required a re-setup of my Deco Meshes (randomly), but this time, it was able to recognize the same SSID, so I didn't have to reconnect all my devices to a new one. That was a relief since I had faced difficulties  with "cant use the same SSID" when I tried it 15 mins earlier).
 

Your message was a great reminder for me as well. I realized that I had mistakenly set the Deco Mesh router mode instead of  AP mode.
After making the necessary changes, I decided to give it a day to see if the issues persisted.
 

However, it seems like problems have resurfaced today, and I suspect that a recent update or firmware might be causing them?? (as I updated the firmware via the app 2-3 days ago and since then the issues have been occuring).

It's a random stringent of issues:

My mobile (OnePlus 6) keeps connecting and disconnecting from the Deco mesh, leading to intermittent or no internet connection.
Unfortunately, I can't currently check the firmware version due to the connection issues, but the app indicated that "Deco meshes are up to date" during a random reconnection.
In an attempt to troubleshoot, I unplugged all 3 Deco mesh units and reconnected them one by one, starting from the main one connected via Ethernet to my Router.

But as we speak now at 9:08 AM, my mobile has re-connectd, but the Deco app "cant find Deco"....
Yet 15 minutes later, it's on the main home page, but cant recognise 2 decos, even though 3 are online with solid white light.!!!!
 

I'm feeling a bit frustrated and lost at this point. 

Any advice or suggestions you have would be greatly appreciated. Thank you for your ongoing support.

Best regards,