Infuse 4.2 (or 5.1) with Synology NAS DSM 6


i have a synology NAS ds211j with DSM 6.
I’m trying to access the UPnP “video” folder with infuse 5.1 (or 4.2).
I can see in the “add files” list my NAS with “(SMB)” and “(FTP)” option.
I tried them both with my NAS admin password but it just don’t work.

Any clue for me to make this work ?