Unfortunately, as said before, the event wouldn't have been fixed until at least on Monday...
We tried several things Friday, but globally some servers aren't really responding to the event while others seem to run it.
To avoid this being unfair for the rest, we will deactivate the boost everywhere.
We will try to find a solution for this and will keep you updated when we have news.
Note: As of posting this, the bonus that the US/AU servers are getting is currently still active. This post is to inform you of the reason if you see the bonus disappear.