Hi, I send my packages with ShipEntegra. ShipEntegra is a verified carrier by Amazon (https://drive.google.com/file/d/1xsgdx6DWlaBtVCXgHnBx4Ixz67FZsOHN/view?usp=sharing). Please check the link I added. You can find this carrier in the Amazon dropdown menu (in every marketplace such as the US, CA, ES, UK, etc.). I'm confirming my orders manually because I am not able to post with your system but as I know, you are the software that provides this service to Amazon sellers. Please add this carrier to your system because I don't want to confirm my shipments manually anymore.