The Journal in Bibledit Cloud should more clearly log a situation that a Bibledit client tries to make a connection but fails, and give more details, like, e.g., user does not exist, or password incorrect, or anything else it checks on.
Secondly once a client has connected to the Cloud, and the credentials on the Cloud change, or the user account is deleted, the Cloud should log as many details a possible. This will assist the user with troubleshooting failed connections and so on.