Try again generally indicates the reader is broken, known issue which Irish Rail doesn't seem to want to fix, no tag on/off would be recorded
If you present the card to the entry side of a turnstile it will always tag on, likewise if you try to exit via a turnstile and the card has not been tagged on within the last 120 minutes it will tag on, and tag off charging the max possible fare.
Call Leap get a refund
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