I Haven't Been Able To Start My Risky Business Chanllenge For Almost A Week.

For almost a week, I haven't been able to restart my Risky Business Challenge. It says, "The challenge failed and to Do It Again." There is a red "X" where the green checkmark is when the challenge is completed. It also says I have 3 days to complete. I thought is I waited 3 days , I would be able to start it again, but it's been almost a week. The other other challenges are working. It's just that one. What can I do to fix it? Thank you.