In the case of tickets not working please try to check the message on the orange LED screen (just below the green arrow), as it helps in diagnosing errors. "Wrong side up/Bun os cionn" and "Ticket failed/theip ar an ticeid" usually mean either the ticket, the reader, or both are faulty. "No valid route/nil aon bealach ceart" means the ticket was read properly but the system thinks it's wrong.
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