Hello! If you are using an older version of this plugin and the plugin folder is still called UsefulFilter just follow these steps:
1. Start the server
2. Copy the config.yml in the "UsefulFilter" folder
3. Paste it into the "UsefulChat" folder and replace the new with the old.
4. Stop the server
5. Start it again.
6. Your options should be saved and the new ones should be there!