A cash machine is read as access to your own resources and self-worth. One that refuses a card speaks of feeling blocked from what you believe is yours.
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.