I use the same contrib for DAV.
First, using folder html seems to be by design since it is using apache and port 80/443.
In order to use an ibay, I use a subdomain to associate the dav enabled ibay. It works with microsoft and linux clients. For windows, the client I use is NetDrive (free for non-commercial).
There is a problem with permissions. When I edit a file, a temporary file stays in the folder when I'm done.