Login Brute Forcing Skills Assessment

I’m working on the Login Brute Forcing skills assessment and I am completely stuck. I got the first part so I have the correct username, I pulled a POST so I have the correct parameters and I think I have a good fail string. I’ve tried a few different password lists though and I can’t get it! Can anyone give me a hand?

Feel free to DM me the line you are using and I can give you a push in the right direction.

Have you solved it? Because I stuck on the same task.
Here is my command:
hydra -L /opt/useful/SecLists/Usernames/top-usernames-shortlist.txt -P /opt/useful/SecLists/Passwords/Leaked-Databases/rockyou-30.txt -u -f -s 39528 http-post-form '/login.php:user=^USER^&pass=^PASS^:F=<form name="log-in"'