Yeelight binding stopped working

I’m running OH2.3 which was pretty stable and my only one yeelight rgb v2 was working fine.
Once got back home after a few days it seems always “offline”, and couldn’t control it no more.
So i updated the yeelight binding from 2.1.0 to 2.3.0 and 2.4.0 without success, now it seems “uninitialized” but can’t even find it with the Paperui automatic research (and i bought a second lamp which i can’t find either).

May it be a bug, or it’s only me? And if that, what can i see to fix it?
Thanks in advance