If you were notified of the upcoming event but can't see it in game, no need to worry. Every new event is always launched for a limited range of players first, just to monitor the possible issues that can occur. The players who are able to participate are picked up by the system randomly, regardless of their progress, country, or the amount of the purchases made. After we make sure that the event functions properly, it becomes available for all the players.

Some of the events we have in game are irregular, so they are not held monthly or weekly. Such events are introduced in certain updates and are announced in the update letters our players receive.