Do I have to buy a special notebook in order to use the Smart Pen and the Notes App? Multiple devices Can I change the lead of my pen? Is the Notes App available for Windows? What can I do with the Notes App and the Smart Writing Set? What if I have any issues while pairing my Smart Pen via Bluetooth? How is the Smart Pen connected to the Notes App? Do I have to pay again if I purchased timepage prior to the change to membership?