Is the modpack supossed to have a specific map?
Because i always get random generated ones.

Yes, you start on an island where your in a box with blazes and such around. When I played multiplayer, I had to run the game once then change the map.

It's not glitched, you need to download the correct map and place it in your server directory.

It is literally the first line in the pack description.

Don't post non-issues here.

Clearly there are thousands of people playing it without a problem so it isn't a problem with the map.

If you're looking for help setting up the server files, please turn to the forums. I'm sure people would be able to assist you there.