You can check your purchase history the following ways:
■Display all previously purchased products
Go to My Page > [ Download History ].
This page shows the purchases in the current month by default.
Select the year/month of the purchase in a drop-down menu next to Month: and click Display.
■Display products via My Items (DLsite Play)
Go to My Page > [ Browse My Items ].
* Discontinued products will not appear on DLsite Play.