Hello!
It seems the unfreezing of the leaderboards has stopped working, but I am working on fixing it. I am currently removing all leaderboards from their quarantine state right now, so let me know if your leaderboard works! Again, I apologize for the inconveniences caused.
EDIT: By now all frozen leaderboards should go back to their normal state, if your leaderboard is still frozen, email me at dan@danqzq.games with the public key of your leaderboard and I will check it out for you.