Purple_PixelMC

I do have multiverse. I still have the problem

I have really enjoyed the Minehut unleashed updates, however, I am trying to upload my custom world by putting it in the server files. Once I do this, it is in, then I go into the world but it is the default seed/world. So since I was making a island map in world painter and it was a ocean world it just showed a regular ocean only world instead of my map. Anyone else having the problem or anyone know how to fix it? Thanks.