@Gaetan5000
The log says “timeout error”.
I guess you have some interferences in your 2.4 GHz band, causing problems to the Zigbee network.
I experienced a similar problem myself, and solved putting my Skyconnect dongle onto a USB extension cable far away from USB ports (where I have also a Bluetooth dongle).
It could be also that the TRVZB is too far from your Zigbee coordinator.
Please refer to this forum post to try solve the interferences: