Reaper Event - Scare Seeker Glitch

Hey, so I've claimed the scare seeker reward but when I apply it in build mode > Venue info > Lot Challenges and click Scare Seeker, it doesn't register on my Repeat Event.

I can't get the reward for the Scare Seeker challenge. I've gone back in to challenge and Scare Seeker is lit green, so I'm not sure what else I'm supposed to do? I've even tried it with and without lot traits. This is on PS4 if it makes a difference ☺️

Thanks guys