There are several places in BetaCMS web console where username is the value user has entered during login and not the value provided by IdentityStore after successfull login.

Since username is not case sensitive, proper user name (as far as cases concerns) is the value provided by IdentityStore once user has been successfully logged in.

For example, a user has been registered with username 'betacms-user'. Whe she logins she provdes value 'BetaCMS-user'. The proper user name to use after she has been successfully logged in is 'betacms-user' and not 'BetaCMS-user'