Hello, I have 3 Deco X50 (Thailand region), Since this update, multiple Sonoff (ESP8266 / ESP32) devices cannot complete Wi-Fi setup. Devices see the SSID, get an IP, appear in Deco, but fail cloud authentication and remain offline. The same Sonoff devices work immediately on a smartphone hotspot.So Sonoff have no problems. please Note that all my DECO X50  are Backhaul with cat 6.  I already tried with all 15 sonoff I have.  – WPA2 only – Wi-Fi 6 disabled – Beamforming off – Fast roaming off – Guest & IoT network disabled – Full reset This is apparently a compatibility issue with firmware I asked the support to provide a downgrade firmware (3.9.x) for Deco X50 (Thailand region).for test.  only answer is to send back my devices and if they are not working they will send new one. These device are already new so for sure it will not solve my problem :-((   Now, I'm thinking to change to another brand if no support can be provided.  We finish build our house and I start the automation set up and this issue came. Loose lot of time. I have devices from TPLink for years. .. any help here please ?  PS : have a happy new year :-)