Earthmatters wrote
It's quite frustrating really as i have mentioned it's all working fine on my mobile but will not work on my Windows Laptop and that was the main reason in wanting the Deco M9 Plus system so i could use the Laptop in the back room.
@Earthmatters
I run Deco mesh with M9 Plus and I can connect desktops on Windows 10 and tablets on Windows 10 and 11 to it with no issues. I have time to help you troubleshoot this, and hopefully we can get to the bottom of it. I see no reason why you can't do with Deco M9 Plus what I can.
For starters, have you turned off your modem WiFi, leaving just Deco mesh WiFi? If not, please turn off your ISP modem WiFi and see if problem goes away.
If it does not, the next step would be for you to tell me what firmware version(s) your Deco units have. The easiest would be for you to open Update Deco in Deco app, make screenshot of it and post here. Example of that screenshot from my Deco app:
