Never needed a username, or password, in DCC, Dreambox Control Centre, v E2 150:
https://www.satpimps.co.uk/showthrea...f-DCC-E2-v1-50

I let DCC locate my VU+ IP address, using the suchen, then Suche, options.
If you're only using the FTP why not download FileZilla, it's free, or use the VU+ Control Centre, provided by Lee:
https://www.satpimps.co.uk/showthrea...ol-Centre-V0-8