Currently messenger, correctly shows notification about invalid JID or password, that is unsuccessful authentication.

However, in case of multiple accounts (7 in my case) there is no way of knowing which account is this. The notification should display JID with the message.

Also, it would be highly useful if we had some information which accounts are online and which are not. Ideally this could be indicated on the accounts manager screen. If it is not possible to attach some indication on this list, then we might need an extra screen in the configuration with a list of all accounts and online status for each.