Today I installed the new pen on my Joto. Everything went very smoothly until the step where it was supposed to draw a straight line. Since then it is completely unresponsive. I have uninstalled and reinstalled the app. The app sees the Joto and says that it is connected, but any requests for a jot or care mode results in nothing at all. I have also unplugged and plugged back in the Joto several times. It has not helped. Also there is no light next to the button on the top of the Joto.