Mostly it's nice, but sometimes it gets stuck and I can't read anymore. Sometimes the dictionary doesn't show up when you want to look up a word. Then you have to reboot in order for the dictionary to be there. So now it's 5/29/21. I've just re-installed this app. I can't read on this app this evening. Now I can't get to the section where I can adjust the type style and size. I did it successfully but when I tried to change page color, I lost the type style and type size. Now I can't go ba