How do I import an existing world on my server?

If you already have a world, for example from singleplayer or from a previous server, you can easily move it to your HostValues server.

Stop the server from the Console tab.
Connect to your server via SFTP. You will find the details in the Settings tab, see also our article about SFTP.
Upload the complete world folder to the root folder of the server. You can recognize the world folder by contents such as level.dat and the region folder.
In the Files tab, open the server.properties file.
Set level-name= to the exact name of the uploaded world folder, for example level-name=myworld.
Start the server again.

A few things to keep in mind:

A singleplayer world contains the Nether and the End inside the world folder itself. On servers running Paper or Spigot these dimensions are created as separate folders on the first start, which is normal.
Upload the world folder itself, not a zip file. If you do upload a zip, extract it with the Unarchive option in the file manager of the panel.
A world from a newer Minecraft version cannot run on an older server version. The other way around does work, the world is then upgraded automatically.

To be safe, always make a backup before replacing or overwriting worlds.

Tip: at HostValues you can rent a Minecraft server and be online within minutes.