@Ray072 This is what I can tell you about current state your Deco mesh, based on screenshots you provided. Having Deco M9 at 2 bars is OK. You will almost never get three bars, they must be really...

@Ray072 You shared Show List screenshot. This is what I needed, but please also give me Show Map screenshot. It appears "Schuur" decide to connect to Main Deco again, which is wrong, but I can't tell...

Ray072 wrote I have 2 Deco's on 2 of 3 bars signal and 1 Deco on 1 of 3 bars @Ray072 Please share your current Show List and Show Map from Deco app. After you removed powerline adapters the next step...

@DecoDoesntWork "Update Assistant" is "upgrade utility" and "update tool" that they refer to. Download it from the link, extract the file, run it and it should present you with the login screen as...

Ray072 wrote @Alexandre. There are now only still a few spots in the house where the signal is poor. deco to deco wise. @Ray072 Do you mean you have Deco node(s) with Weak WiFi backhaul signal...

@DecoDoesntWork Try Method 3 from the following document: How to Update the Firmware of Deco