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