A read receipt with no reply is classically read as feeling ignored or unanswered. Dream books link it to the need for acknowledgement and the sting of silence.
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.