Unfortunately, changes to the COD amount cannot be made once an order is placed. We recommend that you cancel your order and place a new one with the new amount. You can learn how to create a COD parcel here no matter if you need to send one COD parcel or even in bulk.
Before you dive into booking a new COD parcel, you may also want to learn how much COD service costs so you can be better prepared beforehand.
Ultimately, you can also find out more on how COD works in EasyParcel so you can give this amazing payment option to your receivers. May refer here.