The usual reasons for events not being ranked are:
1. No courses seem to have the minimal number of ranked runners (7 ranked runners are required).
2. The event seems to be a street or urban event. These are excluded as they distort the rankings - the UK rankings system is a notorious example.
In the situation asked about by anonymous (rankings at end of June/start of July 2025) there was also processing anomaly whereby Eventor didn't serve up the results for a large event.
This will happen on rare occasions - the Big Foot ranking software will be updated so that further attempts are made at loading that specific result.