@David-TP Thanks for your help David! It's all make sense now. I have 4 Deco x20 come from local network company and one deco from second hand market, so if the firmware 2.0.4 doesn't support IoT is...

Hi there I'm new to here, I recently update the Deco X20's firmware and find a new feature IoT, I have a question that when I use the IoT network, all the devices just linked to the main Deco can't...