Happy Ending : I spend some time with #Razer support, after some verification they asked me to sabotage the Device so they can send me a new one (I had to cut some cables and serial stickers).
I received the replacement device this morning, was sent from China, seem to be a all new device ✨👍.
So I will keep the old one for parts if need it in future, or try to repair it (but it will not look the same as we have to remove the grips and some glued parts to get access to internals).
I hope companies will work to have easier to repair devices in future. Save the planet !