ClassiCube

I save my server.properties file after editing it, and when I start the server it goes back to defaults. Here is what happens https://imgur.com/AOCpPTO, when I edit my server.properties file, my server is offline so it should save but it doesn't. To edit it, I typed nano server.properties, edited the file and saved it. Please help, thanks also port 25565 is port forwarded from my server on both tcp and udp.