Logging in remotly fails _ asking for password

I have just added my NAS to the network, and when accessing a document remotely it fails and asks for a password. Trying to set up the password is OK but the login defaults to anonymous, and there for fails.

I haven’t had this problem before. The documents aren’t encrypted but I can’t access the user name in the login as I can’t access this field.
Screenshot from 2023-09