Excuse me fo the late reply.
We looked at the settings and the DHL output in the ordering process. Unfortunately we couldn’t find any setting for “COD”.
The settings at Woocomerce are:
Additional Insurance default; No Neighbor Delivery default; Named Person Only default; Premium default; Bulky Goods default; Ident Check default; Ident Check Age default; Only allow routing-codable addresses; Store routing default; etc…