From the moment you print, the withdrawal of the money will happen 72 hours later.
Princh reserves the money in your bank account for 72 hours. This means that if an error occurred during the printing, you have 72 hours to reach out to the library so that the payment can be canceled.
After 72 hours when the money has been withdrawn, we can no longer help you, and you will have to reach out to the library where you were printing to find a solution.