I used Total Commander, IE8, Firefox, and Chrome and they all connect and display the folder list. CB connects but does not show folder list, thus it cannot take backup.
I used two different DDNS services: the ASUS one hat you have the logs and DynDNS just now. Exact same behavior.
I have attached three sceen shots from CB: Before login, after login (shows root only, no folder list) and result of backup.
Before and after CB, I used the above 4 programs and all four of them displayed the folder list.