OPUTILS 12.2 no AD Connection

OPUTILS 12.2 no AD Connection

one of our two domain is impossible to be addedd to oputils, in version 8 we have no problem with it

one added is: xxx.it
one not added is: xxx.yyy.it (we are domain admins, but not enterprise admins)

both are same level od AD Forest, Domain ad DC OS 

 no error, simply window to add domain don't close
                New to ADManager Plus?

                  New to ADSelfService Plus?