Everyone is Banned/demoted permently can't remove

Ok so some idiot used an exploit to ban demote everyone on the server permanently from every job.
i have tried everything to Fix this but nothing is working can you’s please help Thanks.

Edit : Also when i do rp_teamunban or use the button in settings i get this Unknown command: rp_teamunban

Use fadmin. Do you have custom scoreboard?

I did use fadmin and i don’t have a custom scoreboard. Everytime i use the unban team i get Unknown command: rp_teamunban