[Q] Daynote isn't function properly. topic

Here is the case. When i open the magnetic cover it automatically turns on the display and show up the Day-note...It's OK...
But the problem is in the Day-note page, the notepad square is not available to draw. It's dark and i tried to add plus mark right up corner but it doesn't add new note....I couldn't find anything in the setting and can't fix it..Help me....:(