Hello, I have a deco E4 which is V2 (I notice E4 US V2 from the label under Deco) but somehow it is running on V1 Firmware 1.5.4 build20211101 Rel. 75384. I guess it was updated from the deco apps...

@David-TP Thank you for your response. I am using Ezviz BC1C and am using 100 Mbps internet line. I suspect it is due to the channel, because I know it was not on channel 2 previously and was working...

My IOT devices are all on 2.4 Ghz, and somehow last week Deco switched to channel 2 although that channel is not good. - Network optimization tools on Deco app will say channel 2 is perfect :( -...