While the stats page provides a nice overview of the results of the previous months, the history page allows you to dig much deeper. This list contains all the iPad's transactions. Armed with a healthy dose of creativity, a pinch of Hercule Poirot thinking and a spread sheet application like Excel, you'll dig up anything you want from this data treasury.
And with Joyn, you're also completely GDPR complaint. As long as you stay within the limits of normal use of Joyn and yourself in the capacity of merchant.