Well, Larian contracted HappyShops, but the question is, who is the one who contracted DHL for the shipments... was that HappyShops or Larian? In other words, for DHL, which of the two is the 'merchant'?
If I had to hazard a guess, Happy Shops would've arranged that: I thought the point would've been that they dealt with all the logistics of getting the packages shipped, otherwise why involve them at all? I could be wrong, though.
The trouble is there's few really good shipping companies, if any, though even with low expectations DHL aren't great, particularly with tracking information. Says a lot that I can get much more complete and up-to-date information from third party companies than DHL itself.