To upload your own world follow this guide
1. Every world you generate is saved in its own folder that can usually be found in c:\Users\{YOUR WINDOWS USERNAME}\AppData\Roaming\MedievalEngineers\Saves\{Your Steam ID}\ Zip up the folder that is your save folder (Must be .zip, not .rar/.7z etc)
2. Log into your game panel > game services > select your server
3. Go to file manager and go into the "Saves" folder, upload your zipped save folder then click it after its finished uploading and select unzip
4. Once the folder has unzipped you should see Saves\Your save folder, come out of file manager and go into configuration files > configuration editor
5. Click persistent world then use the dropdown that appears to select the world you have just uploaded/unzipped
6. If your server does not start or shows an error check the logs as your world probably has an error or is not the correct version.
It is important to note that if you have generated this world previously and it has fewer slots than you have paid for that is the number you will get in the game. More slots than you have paid for will crash your server.
It is also important to note that local saves sometimes can not work with the true dedicated server and you will need to look through the logs to find out why and fix that reason.
Looking for a game server host known for brilliant 24/7 customer support and quality hardware?
Try a Pingperfect Medieval Engineers server today! https://pingperfect.com/gameservers/medieval-engineers-game-server-hosting-rental.php