I've just found this app this afternoon, so here comes some puzzles to me when I am trying to add images to a note on my iPhone. First, It seems that there is no image-adding option on the editing page. The only way I found is using copy&paste operation. Second,  i also use this Notebook on my Windows, it does have the icon to add pictures but the question is those pictures can't be displayed on my phone even after a long time downloading.