Zigbee device goes off and on every few hours

Hello, I have 2 ceiling light powered by 2 separated zigbee switch.
the issue I facing is, when I switch them on, every few hours (2~7, not constant) they will goes off and on one after another within 2 second.
Any ideas why it happen? and any ideas how I can fix this?
The switch I’m using are SWITCH-ZR03-1 by eWeLink
The dongle I used is SkyConnect

edit: the history on home assistant didn’t log they have turned off, nor on, nor unavailable of their … twinkle

Hi,
I have the very same behavior here. I was using the ZR03-1 before with an unpatched Lidl Zigbee Hub w/o any problems.
After patching (and loss of the cloud :slight_smile: ) and integration in HA the switch recognized, but misbehaving as you described.
BUT: in the original Lidl setup I could chose between a switch button and a timer button. My suspect is , that in HA only the timer button is addressed.
maybe that helps …