There's no info yet at the main site so I couldn't look at the manual.
What do you mean by plugged into a "switch?"
I see it does have a single power button, though I don't understand why you'd want to use it as then it wouldn't function.
I see only a few options for your issue:
1) Power Button must be held down for a few seconds
2) Power Button is broken
3) Can't power off until it's charged (I doubt this)