Can't you read? Did the page you just commented on said "Umbra & Lumnis UNLOCK event"? Are you capable of differentiating between an UNLOCK event and a ROAMING event? Look at the title of the page again. What does it say? There's your answer.
Woah, chill out man. Maybe he's new to the game and doesn't know there's different types of events.
I also was confused when I was 1st played this game. Now the game has so much stuff into it that new players will need a little more time to understand the game better.