Felt for you personally, return campaign usually suppose to happens per 3 months. This time, it was quite late at least a month & the announcement kinda came too sudden, announced right on the day it opens. I was even lucky enough to discover when checking my email notification, but even that was 1 day late.

If SE did have fixed schedules on how these events delivered then you could perhaps benefit, but this time they did outside the norm. Best to prep yourself in future in case things like this happens again.