Mashzone 9 (pubblish mashapp without login)

I just try to pubblish some mashapp without login.

1 I enable in mashapp the  "without login"  option (share)

2. I copy and past the new link provided with  option " without login" enable" 

example

http://mypath/mashzone/guest/app/xxxxx

but mashzone require every time  "login e pwd"

note

"guest" user doesn't exist in "Central User Management" ,  can i create/enable it?

my version: Mashzone 9.0.1 Enterprise

thanks very much

M.