Either open a ticket in game by hitting the help button in the settings menu (the gear button) or see the email instructions in this thread: https://forums.505go.com/discussion/1274
I’d recommend you play the time slot you’re in, personally. Nobody’s asked to be moved to another slot yet, so we don’t know if they have the ability to move you at all. By the time they have a definite answer, the event might be almost done. Open the ticket, but try to cut your losses.