Q: How can I sync password-protected Notebooks and protect my sensitive data on my iDevice?
A: If you want to transfer your password-protected sections to the iDevice, please unlock them before synchronization. In the current MobileNoter version separate notebooks/sections cannot be password locked, but you can set a Passcode Lock to protect an entire MobileNoter application on your iDevice. To do that, in the start menu of your iDevice client select Settings - "Passcode Lock enable". If that hasn't helped, please make sure that you have checked an "enable add-in programs to access password-protected sections when they are unlocked" box in the OneNote File - Options - Advanced - Passwords menu.