@JorenT Hi, it is suggested to log in to web UI and there is an option to enable IGMP under system parameters.

@JM123 Hi, thank you very much for getting back to me. Would you please do me a favor to check the Ikea support what it means if the last light is off? Since Philips hue is ok, at least the hardware...

@LudsuC Thank you very much for your kind reply. Please see the reply to the other post for more suggestions.

@LudsuC Hi, I see that you have updated firmware 1.6.0. So I wonder did you lose 2.4ghz after the firmware upgrade? As for the other post, After the firmware upgrade, one M5 lost power. Is it also...

@Tom42 Hi, thank you for your feedback. I tend to think a factory reset might clear the redundant data and speed up the data processing. But there is no valid proof left yet and I could not give you...

@nyonyo Hi, It is an interesting question. May I know where did you see the 3-5 bedrooms and 3-4 bedrooms information? on Amazon? Thank you very much.