Skate-O-Ween Event 3 Not Working

I have completed every challenge for event 3 with Skate-O-Ween. However, the game is only registering 5/6 tasks completed while simultaneously showing me that every task is in fact completed. I attached a photo below. See for yourselves. Every task is done but I'm unable to claim my rewards because of some bug. I don't want to lose my rewards because of something as asinine as this.