If something happened on your server and you need to go back in time to restore previous progress, you can use this guide to restore a backup on your server.
1. Stop the server.
2. Open the File Manager
3. Navigate to /saves/Backups/Cascade/
4. Open one of the backups folder. You can see the created date on the right.
5. Choose a backup folder and copy all of the contents inside. (You may have more than what's in this screenshot)
6. Navigate to /saves/Worlds/Cascade/
7. Right click and Paste all the files from the backup - overwriting the current ones.
8. Finally, restart your server and your backup will be restored.