[World uploading does not work]

I've checked the coordinates; there were supposed to be a lot of buildings there, instead it was simple newly generated terrain. It is another world, somehow.

[World uploading does not work]

Hi! I've uploaded my world, and when i type /worlds in the server, i see the name of the world. When i teleport to it, i see a completely different landscape, it is not the right world. How can i fix this?