Yes, please provide those files and the description which elements where should appear, and what you see instead. A screenshot with marks would be useful too.
Attached a rar file. For information, as standard if you will upload invoice.xsd file located on main folder system will import another files too. Becuase each file is related with another.
I found that when I import XML schema from maindoc/UBL-Invoice-2.1.xsd file, the platform shuts down abnormally. This information is sent to the developer team.
You realized what I want to say. Cause that we can not import xsd, we afraid we should create XDTO package manually. As files are created by government IT department I think the file content is wright.
In Turkey, invoice system is moving to digital invoices. For that we need upload .xsd function on designer mode (because it seem not possible to create xdto package manually).