Hi,
We use DHL to ship our products, we have found that the ATUM plug-in results in the fields being hidden from the shipping tab, this is where we enter Harmonized Shipping (HS) Code, weights etc.... I suspect this will be an easy fix for the ATUM development team. The developers of the DHL plug-in have excellent support and would usually gladly modify their code if they found something they can change on their side, however, they have looked into this bug and determined it is being triggered by something on the ATUM side. I would appreciate it if the ATUM team would investigate this 🙂 A humble request from a loyal customer who runs many of your paid plug-ins.