I already got the daily log in bonus but can't get the event log in

The Halloween Login bonus should be applied from the next day, which is not so unusual.

I tried creating a new character and got the attendance from it
thanks anyway.

Looks like people who didn't log in within the 12 hours before maintenance are one day ahead of people who did. I doubt anything will happen for this time but I'll try sending a ticket in.

Btw, since you posted this twice, you might want to delete the one you posted in the help section. If I'm not mistaken, you can delete it as long as no one replies.