First Login Failed

Hi,
at last, I got the installation of VTE 15 on my server Aruba (yeah)!
I added all my login datails (Name, Last Name, Username, PW...), and when it's time to do the first login... it fails, it doesn't work.
The system get that notice: "You must specify a valid username and password"
I try to recover the pw and create an other one... But it doesn't work anyway.

Any advice?
Thanks million!