Thanks, @Riley_S ! Unfortunately, I made a mistake when specifying the hardware version of my X55. It is actually 1.26, and firmware version "Deco X55(US)_V1.26_1.0.1 Build 20221103" is the latest...

@Riley_S, Thanks for your response! Very quickly, the range is online: I can see the status of the cooktop and the oven in real-time. One of my Deco nodes is indeed in router mode, the other two are...

Looking at the list of LAN clients in an Android app, I see one client (an LG smart range) missing, even though the connection works fine (i.e., I can access the range from its app). Looking at this...