Many times, it is *us* that are shut down, not the cards. They always say what they want to say; it is we, the readers, who are not always listening, or able to decipher the message.
Perhaps clearing your own mind first with a mediation, or taking the time to make reading the cards into a ritual, will provide you with better insight from the cards.
I know that when I was young, and always rushing, and always full of burning desire to
know, I often pressed my cards so hard for answers, that they in effect deserted me - I thought - when rather, I had deserted them, in my hurry to demand answers. When I grew older, and changed my rhythm, and approached them more seriously and with a quiet mind, I had far superior results.