I know what caused this and it will be fixed tomorrow.
As for the capacity question, if you are still eligible but it has reached max capacity you will not get anything. If you are the event finisher, you will get the bonus for how many units it needs to reach completion. If you sell 4600 and the goal requires 3000 units, you will be paid for 3000 units.
On the other hand if your ship was still flagged for an event removed by the admins, all flags will be deleted on the next login.
Question: Could we get Top 5 traders for these events, or even top 5 blue messengers for the combat events?
Would make a pretty nice end result besides all the credits.