Why would the screen tell me that my account is unauthorized when I try to use an ATM, when my account was working fine three days ago?
This could be any number of things from the account access being changed at your bank to a magnetic strip error when the ATM read your card. Try your card on another ATM and if the error still shows, contact your bank. It could still be either of these or possibly something else, but your bank will be able to verify that the card is still connected to the right deposit accounts or issue you a new card.
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