You need to create a classification folder to upload models and textures. The steps are as follows:

1. Go to the design interface, and in the top right corner, click on the personal icon. Then, click on Account Information.

2. The software will redirect to the management interface.

3. Click on Product Management – Category Management – Personal Category – Completed Products.

Click on Model to add a model classification folder. Click on Add Category.

Click on Edit Category, modify the category name, and save it.

Similarly, click on Texture Maps to add a texture classification folder. Click on Add Category.

4. Return to the design interface, go to the Upload Model and Texture section. The model and texture classification folders will now be added to the upload interface.