What

Display that you have cancelled your registration for an event and whether that results in a fine etc., like the website does.

Why

To match the website and the app in terms of messages etc.
Because it clearly was intended (see context).

Context

There is actually code in event_screen.dart with strings that should be displayed when this happens (see line 264 onward), but these are never actually displayed (probably because the cubit is immediately updated before the message can be displayed).