Is there a setting that I need to change? It appears to me now that the screen is VERY SLOWLY displaying the annotations created by the pen and that is what freezes the screen. How do you speed up the screen response to the stylus? 
Actually, I waited till the annotation was complete, and still couldn't do anything on the screen. The Stylus is stuck on pen. When trying to power off the Boox Max 2, a message displayed saying that Mobile Sheets Pro is not responding and I couldn't even indicate with my finger or the stylus that I wanted to exit. Is this a Mobile Sheets problem or a Boox Max 2 problem?
Actually, I waited till the annotation was complete, and still couldn't do anything on the screen. The Stylus is stuck on pen. When trying to power off the Boox Max 2, a message displayed saying that Mobile Sheets Pro is not responding and I couldn't even indicate with my finger or the stylus that I wanted to exit. Is this a Mobile Sheets problem or a Boox Max 2 problem?