guys the cloud service had encountered urgent issues and now it supposed to back to nomarl status~

The issue has been fixed urgently...guys please check that again :-)

change another power circuit to check? it seems that the problem is related to be the unstable power supply. and check if your switch is equipped with dimmer, its another possible factors.

what's your FW version? i think you could power off and power on again to check if the connection is back.

actually u could judge if the back-end device is working by check the power in the summary of Kasa different mode means mix of on/off? schedule may only work for now but i think it's enough

voice service of alexa is awesome, but its interface may be not open for everything. i think the "group" in the alexa also works fine, that is simialr to scenes in Kasa