Please turn off BT connected in the Globals->Network setting when using any of the email functions in unrealBook with an Airturn Pedal. In addition, the Airturn pedal needs to be off. Otherwise the on screen keyboard will not appear.
If both BT connected is OFF and the airturn or page flip is OFF, then you might have to quit the application to get the keyboard back:
air turn, bluetooth, email, keyboard, send a file, share