I dont know how to switch the storage type to database. The default storage is: File but Sql and database both not working.

This is an amazing plugin that does its job to near perfection. (I cannot believe no one else has left a review on this! ) My only irritation is that it puts whitelisted usernames into it's config file instead of a separate file, and there's some config text below the usernames list.

One question though: Does it work on bungee/waterfall proxy servers?