All the transactions you make in the app will have a corresponding statement that you can access in the "Last movements" section. There you will be able to confirm that the operation was carried out correctly.
In case you need a detail of your activity, you can request it from your profile section, by clicking on "Activity report".
You will receive a .csv file in your e-mail with a report on your activity, either to keep your accounts in order or to file it with third parties.
After completing a transaction, you will receive an email notification confirming it. You can choose to deactivate this option from the "App settings" section within the app.