I don’t understand anything anymore. Now, in the Matter integration Settings, I no longer have a Matter node: « No Matter node found. You can add a Matter device by going to the « Add a device » tab. » (Matter is, of course, enabled).
And, in the Devices section of that same Matter integration, I no longer have any « Paired devices not added to Gladys ». I only have the devices that I had already added to Matter!
And to top it all off, there’s a thermometer that no longer reports any information: « No temperature recorded recently ».