When you log in to the system, all notifications since the last login will be opened in the middle of the screen. If you want, you can press the green sign at the bottom of the pop-up window to read them all one by one and move on to the next notification. If you want to turn them all off at once, you can turn off all notifications by pressing the cross at the top right of the pop-up window. If you log out this way, notifications won’t show as read. You can read it again later.
To access unread notifications later, you can access the “Notifications” screen by clicking the notification icon in the upper right area of the console. You can access system announcements, quest participation requests, my activities, duel achievements and all notifications here.