i hav done everything correctly windows btw
No you haven't done everything correctly. If you have, you wouldn't have any problems.
Do you have the following:
A server.cs file.
A Namecheck.txt file.
A description.txt file.
If so. Then make sure it is packaged correctly. Go to the folder containing all the files and open it. Highlight all of the files and right-click then in the menu click send to compressed/zipped folder.
If none of that works. You broke something.