I see it like this too.
When I bought my first items at the marketplace I was not satisfied with the receipts containing only the information of having bought some flight sim credits but no information about the bought item. I tolerated it until the first problems occured. Now I have even the problem, that some bought item is not listed as “owned” in the marketplace allthough it is listed in the profile manager. I contacted support who confirmed, that it is a marketplace bug but closed the ticket after that referring to a later solution - this is absolutely not satisfying and in this case they luckily found my purchase I still have no named proof of purchases for my other marketplace items… At least it should be possible to order a side by side list of order-numbers and purchased items from support but when I tried this I got a item list but withour order numbers…
5 Likes