A name badge stands for the identity you show in public and the role it assigns you. The wrong name on it is read as a feeling of being seen as someone you are not.
When this appeared in your dream, what were you feeling?
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.