Recently, I tried to add DHL quote on our site so our intl customers can choose/compare it. I tried the XML plug-in as the following:

https://www.zen-cart.com/downloads.php?do=file&id=1910

Unfortunately, it didn't work with zc 1.57d. I'm able to fix the warning errors, but there is no quote showing up. It shown "We are unable to obtain a rate quote for DHL shipping." It is possible since it is an 8-year old plug-in...

Anyone using zen cart with DHL?