Mecool KM6 CEC problem and remote or box problems

Mecool KM6 problem CEC. The connection works strangely between the remote and the box. The CEC sometimes shuts down, sometimes it restarts instead of shuts down. The CEC function never turns on the TV. Sometimes it happens that the remote control does not work at all and the box has to be unplugged from the mains manually and plugged in at night. The video is for Banggood technical support