Orders like this are IBA (Invoicing By Amazon) and under this regime, Amazon technically "purchases" the product from the marchant the moment an end customer places an order, and then "resells" it instantly to this end customer. This allows Amazon to issue a standardized VAT invoice directly to the buyer.
This explain why the informations about the final customer are not visible on Lengow. For IBA orders, your legal "customer" is technically Amazon, not the end customer. Therefore, Amazon does not pass the individual's name through the API to third-party tools like Lengow.
This explains that you sometimes see orders like this :
Applicable products: Netmarkets