Closed shutters are read as withdrawal and protection from the outside, while opening them stands for letting light and people back in. Banging shutters point to unease you cannot quite shut out.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.