Missing a club event that is showing in my calendar

I’m missing a non shooting event in my club area that still is showing in my calendar.
How can I get it back and where and why is it gone?
I need to contact my event participants, but it is not possible now
All I can do is find it in my calendar and that link only allows me to try to make a registration

What club and what event?

The club is Aseseppäin Ampumaseura
The event is, Maunula Tactical Action Carbine Vol. 2 (that was held yesterday)
Still can not find it anywhere, but we managed to go trough with it