I use an old version of CoreElec (9.2.8), because my TV box has the Amalogic S912.
On the other hand, although everything was working correctly, navigation via the remote control of my Samsung TV, it no longer worked overnight, without understanding why.
HDMI-CEC is activated, via Anynet+.
Thank you so much !
Why hadn’t I thought of that before. Having turned off/unplugged the television, the control system via the remote control works again.