No sure if this is an acceptable workaround/alternative [0] for Germany but on the "Request My Data" page (https://www.amazon.de/gp/privacycentral/dsar/preview.html) you can request all of your account data and this should include the following file with all of your orders: Retail.OrderHistory.2/Retail.OrderHistory.2.csv

It has the following format: "Marketplace","Order ID","Order Date","Purchase Order Number","Currency","Price","Price Tax","Shipping Charge","Total Discounts","Total Owed","Item Subtotal","Item Subtotal Tax","ASIN","Product Condition","Quantity","Payment Instrument Type","Order Status","Shipment Status","Ship Date","Shipping Option","Shipping Address","Billing Address","Carrier Name & Tracking Number","Product Name","Gift Message","Gift Sender Name","Gift Recipient Contact Details"

(Note: My last export is from January so the filename or format might have changed in the meantime.)

[0]: It provides more data but is annoying / time consuming to use.