I have this issue when sometimes the Mibox S won't turn on at all using the remote control. I have tried spamming the buttons, and changing the batteries, but that doesn't work.
I need to unplug/plug the power for it to turn on. Is there any fix for this? Is it a common problem? Should I do a factory reset? The box is running the latest OS available, and everything is up to date.
Might have to resync your remote. I've had to do this a couple times since buying mine 3 years ago. Go into the settings and unpair your bluetooth remote from the list.
Basically watch this video on how to do it:
https://www.youtube.com/watch?v=O7LhCrn_nWw