Bind aqara switch with aqara relay

Hello,

I have two aqara devices (WXKG17LM and DLKZMK11LM) which I would like to bind with Z2M. My goal is to switch on the lights directly within the zigbee network, without using an automation in HA. Since I don’t have wired switches, I want that the lights continue to work even if HA is down.

The bind button remains greyed out, I guess because cluster endpoints are empty on the WXKG17LM.

The controller is a SLZB-06 with quite recent firmwares :
image

Can someone please explain to me how to bind them ?