How to ListFolderAsync to a folder in the root folder?

Currently, I am trying to connect a WPF C# app to my Dropbox. I have the folders organized in the way you see in the image. Leaving the string empty opens the "Student" folder, however I want my app to list the contents "code" folder. I have tried using "code", "\\code", "/code" but the app always throws a path not found error.

I am not sure what I am doing wrong, any help is appreciated! If you need any more information, please let me know.

Thank you!

private async Task<List<FolderViewModel>> FetchFoldersAsync(string accessToken)
{
    var items = new List<FolderViewModel>();

    using (var dbx = new DropboxClient(accessToken))
    {
        var list = await dbx.Files.ListFolderAsync("");

        MessageBox.Show(list.Entries.ToString());

        foreach (var item in list.Entries)
        {
             BitmapImage thumbnail = null;

             if (!item.IsFolder)
             {
                  thumbnail = await FetchThumbnailAsync(dbx, item.PathDisplay);
              }

              items.Add(new FolderViewModel
              {
                   Name = item.Name,
                   Thumbnail =
                   thumbnail ?? new BitmapImage(new 
                   Uri("pack://application:,,,/Resources/Images/folder-icon.png", 
                   UriKind.RelativeOrAbsolute)),
               });
          }
     }
     return items;
}