Cannot upload to or create folder on Synology WebDAV server

Do you have problem uploading files to Synology NAS and creating folder thru WebDAV?

Please check if your account has ‘Read only’ permission.

And please remember that you cannot create folder or upload file on root folder on Synology NAS. The root folder lists shared folders and it is not a real folder.

I have double checked and I have permissions. I don’t understand the root folder list. How do I make a non-root folder so that I can make folders and upload using webdav and netdrive3.

What settings if any in synology do I need to ensure a fast connection? I understand connection is dependent on internet connection, but my connection is not working as fast as the connection allows.