I wanted to clear someone's quest data so I used /questadmin purge [name], which worked, however it also appears to have blacklisted everyone. No normal players or even ops are able to use and /quest commands and are greeted by the message that they are blacklisted and should contact a server admin if it is in error. How can I un-blacklist everyone from this "blacklist" and prevent this from happening in the future?

Remove their UUIDs from config.yml

Same bug

Closed due to lack of response from OP. If this is still an issue, feel free to create a new ticket with more information.

@FlyingPikachu i just have the same issue in latest version

@ScuroK Please see my last comment where I said to make a new ticket if this is still an issue.