The best way to see if and when fees are charged for transactions is to use the Plata Pay™ mobile app. All transaction fees are listed in the app, whether an ATM fee or an inactivity fee, card replacement fee or other.
Plata Pay™ also provides a list of all transactions and what the applicable fee is, if there is one, inside the envelope that your Plata Pay™ card comes in. You can also view this document here.