Zigbee wall swtich is working, lovelace switch don't work

Hi, I have a strange behavior.
If I push a zigbee wall switch, then I see the change on my dashboard and the light is going on/off. So far so good.
If I change the button in my dashboard, then it is not working => light is not changing (on/off or off/on)
Any idea what’s the problem?

I think I found the solution: a zigbee repeater had no connection with the network anymore. I repaired it and now everything is fine again.