Z11 pro rebooting

So I have a z11 pro and it keeps rebooting at exactly 8 o’clock at night

I have tried

1)clearing cache

2)Uninstalling mytvonline 3 and reinstalled

3)schedules data Refresh setting have not been changed(Schedule refresh is on,Time of day is set to 5:00,EPG Data settings-EPG Data storage is set to 7 days

4)Power mode is set to stand by

5)Mytvonline 3 sleep mode is OFF

Have not done a factory reset

Running on bell internet

What else can be the problem ?

Would a faulty power adapter be the cause ?

Would having the box plugged into a power surge bar be the cause ?

Other usb devices such as a usb keyboard be the cause ?

Thanks